/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl
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This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad
[2021-06-12 21:19:04,968 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-06-12 21:19:04,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
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[2021-06-12 21:19:04,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-06-12 21:19:04,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-06-12 21:19:04,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-06-12 21:19:05,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-06-12 21:19:05,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-06-12 21:19:05,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-06-12 21:19:05,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-06-12 21:19:05,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-06-12 21:19:05,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-06-12 21:19:05,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-06-12 21:19:05,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-06-12 21:19:05,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-06-12 21:19:05,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-06-12 21:19:05,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf
[2021-06-12 21:19:05,034 INFO L113 SettingsManager]: Loading preferences was successful
[2021-06-12 21:19:05,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-06-12 21:19:05,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-06-12 21:19:05,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-06-12 21:19:05,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-06-12 21:19:05,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-06-12 21:19:05,035 INFO L138 SettingsManager]: * Use SBE=true
[2021-06-12 21:19:05,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-06-12 21:19:05,035 INFO L138 SettingsManager]: * sizeof long=4
[2021-06-12 21:19:05,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * sizeof long double=12
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-06-12 21:19:05,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-06-12 21:19:05,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-12 21:19:05,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-06-12 21:19:05,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-06-12 21:19:05,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-06-12 21:19:05,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-06-12 21:19:05,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-06-12 21:19:05,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-06-12 21:19:05,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-06-12 21:19:05,263 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-06-12 21:19:05,263 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2021-06-12 21:19:05,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl
[2021-06-12 21:19:05,264 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl'
[2021-06-12 21:19:05,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-06-12 21:19:05,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-06-12 21:19:05,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-06-12 21:19:05,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-06-12 21:19:05,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-06-12 21:19:05,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-06-12 21:19:05,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-06-12 21:19:05,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-06-12 21:19:05,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-06-12 21:19:05,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
[2021-06-12 21:19:05,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-06-12 21:19:05,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-06-12 21:19:05,331 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-06-12 21:19:05,331 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-06-12 21:19:05,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-12 21:19:05,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-06-12 21:19:05,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2021-06-12 21:19:05,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2021-06-12 21:19:05,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-06-12 21:19:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2021-06-12 21:19:05,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2021-06-12 21:19:05,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-06-12 21:19:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-06-12 21:19:05,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-06-12 21:19:05,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2021-06-12 21:19:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2021-06-12 21:19:05,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2021-06-12 21:19:05,384 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-06-12 21:19:05,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-06-12 21:19:05,545 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-06-12 21:19:05,546 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 09:19:05 BoogieIcfgContainer
[2021-06-12 21:19:05,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-06-12 21:19:05,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-06-12 21:19:05,548 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-06-12 21:19:05,549 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-06-12 21:19:05,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 09:19:05" (1/2) ...
[2021-06-12 21:19:05,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a3d958 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 09:19:05, skipping insertion in model container
[2021-06-12 21:19:05,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 09:19:05" (2/2) ...
[2021-06-12 21:19:05,551 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl
[2021-06-12 21:19:05,554 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-06-12 21:19:05,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-06-12 21:19:05,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-06-12 21:19:05,555 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-06-12 21:19:05,605 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2021-06-12 21:19:05,618 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-06-12 21:19:05,632 INFO L378 AbstractCegarLoop]: Interprodecural is true
[2021-06-12 21:19:05,632 INFO L379 AbstractCegarLoop]: Hoare is false
[2021-06-12 21:19:05,632 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-06-12 21:19:05,632 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-06-12 21:19:05,632 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-06-12 21:19:05,632 INFO L383 AbstractCegarLoop]: Difference is false
[2021-06-12 21:19:05,632 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-06-12 21:19:05,633 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-06-12 21:19:05,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow
[2021-06-12 21:19:05,667 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 138 states, 136 states have (on average 2.786764705882353) internal successors, (379), 137 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 2.786764705882353) internal successors, (379), 137 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-06-12 21:19:05,676 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:05,676 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:05,676 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1198606410, now seen corresponding path program 1 times
[2021-06-12 21:19:05,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:05,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147579547]
[2021-06-12 21:19:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:05,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:05,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147579547]
[2021-06-12 21:19:05,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147579547] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-12 21:19:05,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-12 21:19:05,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-06-12 21:19:05,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911391099]
[2021-06-12 21:19:05,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-06-12 21:19:05,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:05,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-06-12 21:19:05,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-06-12 21:19:05,873 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 2.786764705882353) internal successors, (379), 137 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:05,933 INFO L93 Difference]: Finished difference Result 186 states and 525 transitions.
[2021-06-12 21:19:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-06-12 21:19:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-06-12 21:19:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:05,945 INFO L225 Difference]: With dead ends: 186
[2021-06-12 21:19:05,945 INFO L226 Difference]: Without dead ends: 186
[2021-06-12 21:19:05,947 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-06-12 21:19:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states.
[2021-06-12 21:19:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 161.
[2021-06-12 21:19:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.81875) internal successors, (451), 160 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 451 transitions.
[2021-06-12 21:19:06,006 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 451 transitions. Word has length 21
[2021-06-12 21:19:06,007 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:06,007 INFO L482 AbstractCegarLoop]: Abstraction has 161 states and 451 transitions.
[2021-06-12 21:19:06,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 451 transitions.
[2021-06-12 21:19:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-06-12 21:19:06,009 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:06,009 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:06,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-06-12 21:19:06,009 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:06,010 INFO L82 PathProgramCache]: Analyzing trace with hash -30759958, now seen corresponding path program 1 times
[2021-06-12 21:19:06,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:06,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179075239]
[2021-06-12 21:19:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:06,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:06,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179075239]
[2021-06-12 21:19:06,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179075239] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-12 21:19:06,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-12 21:19:06,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-06-12 21:19:06,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250978128]
[2021-06-12 21:19:06,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-06-12 21:19:06,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-06-12 21:19:06,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-06-12 21:19:06,062 INFO L87 Difference]: Start difference. First operand 161 states and 451 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:06,095 INFO L93 Difference]: Finished difference Result 151 states and 403 transitions.
[2021-06-12 21:19:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-06-12 21:19:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2021-06-12 21:19:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:06,098 INFO L225 Difference]: With dead ends: 151
[2021-06-12 21:19:06,098 INFO L226 Difference]: Without dead ends: 151
[2021-06-12 21:19:06,098 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-06-12 21:19:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2021-06-12 21:19:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151.
[2021-06-12 21:19:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.6866666666666665) internal successors, (403), 150 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 403 transitions.
[2021-06-12 21:19:06,115 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 403 transitions. Word has length 23
[2021-06-12 21:19:06,115 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:06,115 INFO L482 AbstractCegarLoop]: Abstraction has 151 states and 403 transitions.
[2021-06-12 21:19:06,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 403 transitions.
[2021-06-12 21:19:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-06-12 21:19:06,116 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:06,116 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:06,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-06-12 21:19:06,117 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash 635090215, now seen corresponding path program 1 times
[2021-06-12 21:19:06,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:06,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163023316]
[2021-06-12 21:19:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:06,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:06,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163023316]
[2021-06-12 21:19:06,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163023316] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-12 21:19:06,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-12 21:19:06,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-12 21:19:06,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349118331]
[2021-06-12 21:19:06,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-06-12 21:19:06,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-06-12 21:19:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-06-12 21:19:06,175 INFO L87 Difference]: Start difference. First operand 151 states and 403 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:06,236 INFO L93 Difference]: Finished difference Result 223 states and 619 transitions.
[2021-06-12 21:19:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-06-12 21:19:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-06-12 21:19:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:06,240 INFO L225 Difference]: With dead ends: 223
[2021-06-12 21:19:06,240 INFO L226 Difference]: Without dead ends: 223
[2021-06-12 21:19:06,243 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-06-12 21:19:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2021-06-12 21:19:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223.
[2021-06-12 21:19:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.7882882882882885) internal successors, (619), 222 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 619 transitions.
[2021-06-12 21:19:06,252 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 619 transitions. Word has length 26
[2021-06-12 21:19:06,252 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:06,252 INFO L482 AbstractCegarLoop]: Abstraction has 223 states and 619 transitions.
[2021-06-12 21:19:06,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 619 transitions.
[2021-06-12 21:19:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-06-12 21:19:06,254 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:06,254 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:06,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-06-12 21:19:06,254 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1690862269, now seen corresponding path program 1 times
[2021-06-12 21:19:06,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:06,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815651299]
[2021-06-12 21:19:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-12 21:19:06,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:06,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815651299]
[2021-06-12 21:19:06,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815651299] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-12 21:19:06,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-12 21:19:06,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-12 21:19:06,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737560022]
[2021-06-12 21:19:06,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-06-12 21:19:06,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-06-12 21:19:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-06-12 21:19:06,295 INFO L87 Difference]: Start difference. First operand 223 states and 619 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:06,340 INFO L93 Difference]: Finished difference Result 344 states and 930 transitions.
[2021-06-12 21:19:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-06-12 21:19:06,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28
[2021-06-12 21:19:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:06,344 INFO L225 Difference]: With dead ends: 344
[2021-06-12 21:19:06,344 INFO L226 Difference]: Without dead ends: 308
[2021-06-12 21:19:06,344 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-06-12 21:19:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states.
[2021-06-12 21:19:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235.
[2021-06-12 21:19:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.8076923076923075) internal successors, (657), 234 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 657 transitions.
[2021-06-12 21:19:06,354 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 657 transitions. Word has length 28
[2021-06-12 21:19:06,354 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:06,354 INFO L482 AbstractCegarLoop]: Abstraction has 235 states and 657 transitions.
[2021-06-12 21:19:06,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 657 transitions.
[2021-06-12 21:19:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-06-12 21:19:06,357 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:06,357 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:06,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-06-12 21:19:06,358 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:06,358 INFO L82 PathProgramCache]: Analyzing trace with hash 451315555, now seen corresponding path program 2 times
[2021-06-12 21:19:06,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:06,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097469859]
[2021-06-12 21:19:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:06,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:06,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097469859]
[2021-06-12 21:19:06,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097469859] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:06,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900275766]
[2021-06-12 21:19:06,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:06,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:19:06,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:06,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-06-12 21:19:06,507 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:06,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900275766] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:06,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:06,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14
[2021-06-12 21:19:06,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312498294]
[2021-06-12 21:19:06,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-06-12 21:19:06,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:06,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-06-12 21:19:06,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182
[2021-06-12 21:19:06,778 INFO L87 Difference]: Start difference. First operand 235 states and 657 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:07,316 INFO L93 Difference]: Finished difference Result 545 states and 1518 transitions.
[2021-06-12 21:19:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-06-12 21:19:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2021-06-12 21:19:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:07,319 INFO L225 Difference]: With dead ends: 545
[2021-06-12 21:19:07,319 INFO L226 Difference]: Without dead ends: 545
[2021-06-12 21:19:07,320 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 421.5ms TimeCoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:19:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states.
[2021-06-12 21:19:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 312.
[2021-06-12 21:19:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 2.9485530546623795) internal successors, (917), 311 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 917 transitions.
[2021-06-12 21:19:07,329 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 917 transitions. Word has length 30
[2021-06-12 21:19:07,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:07,329 INFO L482 AbstractCegarLoop]: Abstraction has 312 states and 917 transitions.
[2021-06-12 21:19:07,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 917 transitions.
[2021-06-12 21:19:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-06-12 21:19:07,330 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:07,330 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:07,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:07,549 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash 564518119, now seen corresponding path program 3 times
[2021-06-12 21:19:07,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:07,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723849907]
[2021-06-12 21:19:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:07,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:07,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723849907]
[2021-06-12 21:19:07,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723849907] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:07,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353367960]
[2021-06-12 21:19:07,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:07,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:19:07,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:07,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-06-12 21:19:07,673 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:07,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353367960] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:07,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:07,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14
[2021-06-12 21:19:07,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694772821]
[2021-06-12 21:19:07,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-06-12 21:19:07,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:07,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-06-12 21:19:07,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2021-06-12 21:19:07,849 INFO L87 Difference]: Start difference. First operand 312 states and 917 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:08,506 INFO L93 Difference]: Finished difference Result 874 states and 2542 transitions.
[2021-06-12 21:19:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-06-12 21:19:08,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2021-06-12 21:19:08,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:08,514 INFO L225 Difference]: With dead ends: 874
[2021-06-12 21:19:08,514 INFO L226 Difference]: Without dead ends: 874
[2021-06-12 21:19:08,515 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 532.9ms TimeCoverageRelationStatistics Valid=387, Invalid=1019, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:19:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states.
[2021-06-12 21:19:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 392.
[2021-06-12 21:19:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.0051150895140664) internal successors, (1175), 391 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1175 transitions.
[2021-06-12 21:19:08,526 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1175 transitions. Word has length 30
[2021-06-12 21:19:08,527 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:08,527 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1175 transitions.
[2021-06-12 21:19:08,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1175 transitions.
[2021-06-12 21:19:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-06-12 21:19:08,529 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:08,530 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:08,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-06-12 21:19:08,745 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash 743116131, now seen corresponding path program 4 times
[2021-06-12 21:19:08,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:08,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178768646]
[2021-06-12 21:19:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:08,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:08,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178768646]
[2021-06-12 21:19:08,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178768646] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:08,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707095899]
[2021-06-12 21:19:08,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:08,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:19:08,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:08,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-06-12 21:19:08,881 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:08,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707095899] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:08,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:08,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2021-06-12 21:19:08,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788464479]
[2021-06-12 21:19:08,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-06-12 21:19:08,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-06-12 21:19:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-06-12 21:19:08,937 INFO L87 Difference]: Start difference. First operand 392 states and 1175 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:09,086 INFO L93 Difference]: Finished difference Result 800 states and 2390 transitions.
[2021-06-12 21:19:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-06-12 21:19:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2021-06-12 21:19:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:09,089 INFO L225 Difference]: With dead ends: 800
[2021-06-12 21:19:09,089 INFO L226 Difference]: Without dead ends: 800
[2021-06-12 21:19:09,090 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240
[2021-06-12 21:19:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states.
[2021-06-12 21:19:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 521.
[2021-06-12 21:19:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 3.1134615384615385) internal successors, (1619), 520 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1619 transitions.
[2021-06-12 21:19:09,102 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1619 transitions. Word has length 30
[2021-06-12 21:19:09,102 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:09,102 INFO L482 AbstractCegarLoop]: Abstraction has 521 states and 1619 transitions.
[2021-06-12 21:19:09,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1619 transitions.
[2021-06-12 21:19:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-06-12 21:19:09,103 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:09,104 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:09,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2021-06-12 21:19:09,320 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1461330985, now seen corresponding path program 5 times
[2021-06-12 21:19:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:09,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022168877]
[2021-06-12 21:19:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:09,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:09,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022168877]
[2021-06-12 21:19:09,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022168877] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:09,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135178084]
[2021-06-12 21:19:09,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:09,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:19:09,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:09,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-06-12 21:19:09,424 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:09,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135178084] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:09,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:09,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-06-12 21:19:09,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991976800]
[2021-06-12 21:19:09,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-06-12 21:19:09,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:09,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-06-12 21:19:09,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272
[2021-06-12 21:19:09,585 INFO L87 Difference]: Start difference. First operand 521 states and 1619 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:10,359 INFO L93 Difference]: Finished difference Result 2062 states and 6284 transitions.
[2021-06-12 21:19:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2021-06-12 21:19:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2021-06-12 21:19:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:10,368 INFO L225 Difference]: With dead ends: 2062
[2021-06-12 21:19:10,368 INFO L226 Difference]: Without dead ends: 2062
[2021-06-12 21:19:10,368 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 610.2ms TimeCoverageRelationStatistics Valid=593, Invalid=1569, Unknown=0, NotChecked=0, Total=2162
[2021-06-12 21:19:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states.
[2021-06-12 21:19:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1269.
[2021-06-12 21:19:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 3.1553627760252367) internal successors, (4001), 1268 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 4001 transitions.
[2021-06-12 21:19:10,403 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 4001 transitions. Word has length 30
[2021-06-12 21:19:10,403 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:10,403 INFO L482 AbstractCegarLoop]: Abstraction has 1269 states and 4001 transitions.
[2021-06-12 21:19:10,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 4001 transitions.
[2021-06-12 21:19:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-06-12 21:19:10,406 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:10,406 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:10,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:10,625 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:10,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1450700455, now seen corresponding path program 6 times
[2021-06-12 21:19:10,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:10,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759025108]
[2021-06-12 21:19:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:10,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:10,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759025108]
[2021-06-12 21:19:10,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759025108] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:10,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545478794]
[2021-06-12 21:19:10,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:10,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:19:10,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:10,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-06-12 21:19:10,718 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:10,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545478794] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:10,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:10,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2021-06-12 21:19:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181321267]
[2021-06-12 21:19:10,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-06-12 21:19:10,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-06-12 21:19:10,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-06-12 21:19:10,772 INFO L87 Difference]: Start difference. First operand 1269 states and 4001 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:10,899 INFO L93 Difference]: Finished difference Result 1797 states and 5545 transitions.
[2021-06-12 21:19:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-06-12 21:19:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2021-06-12 21:19:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:10,905 INFO L225 Difference]: With dead ends: 1797
[2021-06-12 21:19:10,906 INFO L226 Difference]: Without dead ends: 1797
[2021-06-12 21:19:10,906 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2021-06-12 21:19:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states.
[2021-06-12 21:19:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1209.
[2021-06-12 21:19:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 3.138245033112583) internal successors, (3791), 1208 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 3791 transitions.
[2021-06-12 21:19:10,948 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 3791 transitions. Word has length 30
[2021-06-12 21:19:10,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:10,949 INFO L482 AbstractCegarLoop]: Abstraction has 1209 states and 3791 transitions.
[2021-06-12 21:19:10,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 3791 transitions.
[2021-06-12 21:19:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-06-12 21:19:10,952 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:10,952 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:11,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2021-06-12 21:19:11,165 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1660018845, now seen corresponding path program 7 times
[2021-06-12 21:19:11,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:11,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048425548]
[2021-06-12 21:19:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:11,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:11,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048425548]
[2021-06-12 21:19:11,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048425548] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:11,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465985058]
[2021-06-12 21:19:11,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:11,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-06-12 21:19:11,238 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:11,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465985058] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:11,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:11,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2021-06-12 21:19:11,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739746496]
[2021-06-12 21:19:11,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-06-12 21:19:11,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:11,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-06-12 21:19:11,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-06-12 21:19:11,284 INFO L87 Difference]: Start difference. First operand 1209 states and 3791 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:11,390 INFO L93 Difference]: Finished difference Result 2345 states and 7301 transitions.
[2021-06-12 21:19:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-06-12 21:19:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2021-06-12 21:19:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:11,399 INFO L225 Difference]: With dead ends: 2345
[2021-06-12 21:19:11,399 INFO L226 Difference]: Without dead ends: 2345
[2021-06-12 21:19:11,399 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210
[2021-06-12 21:19:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states.
[2021-06-12 21:19:11,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1749.
[2021-06-12 21:19:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1748 states have (on average 3.230549199084668) internal successors, (5647), 1748 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 5647 transitions.
[2021-06-12 21:19:11,439 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 5647 transitions. Word has length 30
[2021-06-12 21:19:11,440 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:11,440 INFO L482 AbstractCegarLoop]: Abstraction has 1749 states and 5647 transitions.
[2021-06-12 21:19:11,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 5647 transitions.
[2021-06-12 21:19:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-06-12 21:19:11,443 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:11,443 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:11,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:11,657 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:11,657 INFO L82 PathProgramCache]: Analyzing trace with hash 125703753, now seen corresponding path program 8 times
[2021-06-12 21:19:11,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:11,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807418003]
[2021-06-12 21:19:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:11,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:11,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807418003]
[2021-06-12 21:19:11,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807418003] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:11,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714822001]
[2021-06-12 21:19:11,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:11,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:19:11,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:11,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-06-12 21:19:11,745 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:11,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714822001] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:11,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:11,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17
[2021-06-12 21:19:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426646256]
[2021-06-12 21:19:11,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-06-12 21:19:11,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-06-12 21:19:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272
[2021-06-12 21:19:11,941 INFO L87 Difference]: Start difference. First operand 1749 states and 5647 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:12,334 INFO L93 Difference]: Finished difference Result 2383 states and 7508 transitions.
[2021-06-12 21:19:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-06-12 21:19:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-06-12 21:19:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:12,342 INFO L225 Difference]: With dead ends: 2383
[2021-06-12 21:19:12,342 INFO L226 Difference]: Without dead ends: 2383
[2021-06-12 21:19:12,343 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 338.5ms TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:19:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states.
[2021-06-12 21:19:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 1915.
[2021-06-12 21:19:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1914 states have (on average 3.239811912225705) internal successors, (6201), 1914 states have internal predecessors, (6201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 6201 transitions.
[2021-06-12 21:19:12,385 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 6201 transitions. Word has length 32
[2021-06-12 21:19:12,385 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:12,385 INFO L482 AbstractCegarLoop]: Abstraction has 1915 states and 6201 transitions.
[2021-06-12 21:19:12,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 6201 transitions.
[2021-06-12 21:19:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-06-12 21:19:12,389 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:12,389 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:12,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:12,606 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:12,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:12,606 INFO L82 PathProgramCache]: Analyzing trace with hash 47423557, now seen corresponding path program 9 times
[2021-06-12 21:19:12,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:12,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979652979]
[2021-06-12 21:19:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:12,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:12,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979652979]
[2021-06-12 21:19:12,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979652979] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:12,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533760134]
[2021-06-12 21:19:12,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:12,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:19:12,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:12,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-06-12 21:19:12,682 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:12,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533760134] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:12,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:12,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16
[2021-06-12 21:19:12,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763694173]
[2021-06-12 21:19:12,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-06-12 21:19:12,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:12,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-06-12 21:19:12,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240
[2021-06-12 21:19:12,816 INFO L87 Difference]: Start difference. First operand 1915 states and 6201 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:13,417 INFO L93 Difference]: Finished difference Result 3613 states and 11319 transitions.
[2021-06-12 21:19:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-06-12 21:19:13,417 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-06-12 21:19:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:13,431 INFO L225 Difference]: With dead ends: 3613
[2021-06-12 21:19:13,432 INFO L226 Difference]: Without dead ends: 3613
[2021-06-12 21:19:13,432 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 434.8ms TimeCoverageRelationStatistics Valid=501, Invalid=1139, Unknown=0, NotChecked=0, Total=1640
[2021-06-12 21:19:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states.
[2021-06-12 21:19:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 2052.
[2021-06-12 21:19:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 3.2457337883959045) internal successors, (6657), 2051 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 6657 transitions.
[2021-06-12 21:19:13,497 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 6657 transitions. Word has length 32
[2021-06-12 21:19:13,498 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:13,498 INFO L482 AbstractCegarLoop]: Abstraction has 2052 states and 6657 transitions.
[2021-06-12 21:19:13,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 6657 transitions.
[2021-06-12 21:19:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-06-12 21:19:13,502 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:13,502 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:13,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2021-06-12 21:19:13,719 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1904870325, now seen corresponding path program 10 times
[2021-06-12 21:19:13,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:13,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411826896]
[2021-06-12 21:19:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:13,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:13,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411826896]
[2021-06-12 21:19:13,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411826896] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:13,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149310169]
[2021-06-12 21:19:13,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:13,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:19:13,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:13,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-06-12 21:19:13,833 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:13,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149310169] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:13,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:13,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17
[2021-06-12 21:19:13,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702655972]
[2021-06-12 21:19:13,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-06-12 21:19:13,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:13,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-06-12 21:19:13,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272
[2021-06-12 21:19:13,928 INFO L87 Difference]: Start difference. First operand 2052 states and 6657 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:14,195 INFO L93 Difference]: Finished difference Result 4372 states and 13767 transitions.
[2021-06-12 21:19:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-06-12 21:19:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-06-12 21:19:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:14,205 INFO L225 Difference]: With dead ends: 4372
[2021-06-12 21:19:14,205 INFO L226 Difference]: Without dead ends: 4372
[2021-06-12 21:19:14,206 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 230.1ms TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870
[2021-06-12 21:19:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states.
[2021-06-12 21:19:14,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 3140.
[2021-06-12 21:19:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3139 states have (on average 3.294361261548264) internal successors, (10341), 3139 states have internal predecessors, (10341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 10341 transitions.
[2021-06-12 21:19:14,294 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 10341 transitions. Word has length 32
[2021-06-12 21:19:14,294 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:14,294 INFO L482 AbstractCegarLoop]: Abstraction has 3140 states and 10341 transitions.
[2021-06-12 21:19:14,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 10341 transitions.
[2021-06-12 21:19:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-06-12 21:19:14,300 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:14,300 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:14,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:14,517 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1718839609, now seen corresponding path program 11 times
[2021-06-12 21:19:14,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:14,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413882934]
[2021-06-12 21:19:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:14,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:14,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413882934]
[2021-06-12 21:19:14,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413882934] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:14,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184309235]
[2021-06-12 21:19:14,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:14,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:19:14,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:14,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-06-12 21:19:14,622 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:14,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184309235] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:14,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:14,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22
[2021-06-12 21:19:14,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454195616]
[2021-06-12 21:19:14,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states
[2021-06-12 21:19:14,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:14,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-06-12 21:19:14,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462
[2021-06-12 21:19:14,821 INFO L87 Difference]: Start difference. First operand 3140 states and 10341 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:16,225 INFO L93 Difference]: Finished difference Result 9020 states and 28737 transitions.
[2021-06-12 21:19:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:19:16,225 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-06-12 21:19:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:16,244 INFO L225 Difference]: With dead ends: 9020
[2021-06-12 21:19:16,244 INFO L226 Difference]: Without dead ends: 9020
[2021-06-12 21:19:16,245 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1071.6ms TimeCoverageRelationStatistics Valid=1159, Invalid=3397, Unknown=0, NotChecked=0, Total=4556
[2021-06-12 21:19:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states.
[2021-06-12 21:19:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 5832.
[2021-06-12 21:19:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 5831 states have (on average 3.3656319670725434) internal successors, (19625), 5831 states have internal predecessors, (19625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 19625 transitions.
[2021-06-12 21:19:16,381 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 19625 transitions. Word has length 32
[2021-06-12 21:19:16,381 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:16,381 INFO L482 AbstractCegarLoop]: Abstraction has 5832 states and 19625 transitions.
[2021-06-12 21:19:16,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 19625 transitions.
[2021-06-12 21:19:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-06-12 21:19:16,389 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:16,389 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:16,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:16,606 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:16,606 INFO L82 PathProgramCache]: Analyzing trace with hash -866066123, now seen corresponding path program 12 times
[2021-06-12 21:19:16,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:16,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460370510]
[2021-06-12 21:19:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:16,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:16,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460370510]
[2021-06-12 21:19:16,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460370510] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:16,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698774132]
[2021-06-12 21:19:16,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:16,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:19:16,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:16,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-06-12 21:19:16,724 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:16,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698774132] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:16,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:16,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 17
[2021-06-12 21:19:16,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525173273]
[2021-06-12 21:19:16,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-06-12 21:19:16,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-06-12 21:19:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272
[2021-06-12 21:19:16,825 INFO L87 Difference]: Start difference. First operand 5832 states and 19625 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:17,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:17,706 INFO L93 Difference]: Finished difference Result 12646 states and 40893 transitions.
[2021-06-12 21:19:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:19:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-06-12 21:19:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:17,734 INFO L225 Difference]: With dead ends: 12646
[2021-06-12 21:19:17,734 INFO L226 Difference]: Without dead ends: 12646
[2021-06-12 21:19:17,735 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 637.4ms TimeCoverageRelationStatistics Valid=883, Invalid=2087, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:19:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12646 states.
[2021-06-12 21:19:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12646 to 6547.
[2021-06-12 21:19:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 3.340360525511763) internal successors, (21866), 6546 states have internal predecessors, (21866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 21866 transitions.
[2021-06-12 21:19:17,917 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 21866 transitions. Word has length 32
[2021-06-12 21:19:17,917 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:17,917 INFO L482 AbstractCegarLoop]: Abstraction has 6547 states and 21866 transitions.
[2021-06-12 21:19:17,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 21866 transitions.
[2021-06-12 21:19:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-06-12 21:19:17,926 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:17,926 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:18,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2021-06-12 21:19:18,143 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:18,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1685658193, now seen corresponding path program 13 times
[2021-06-12 21:19:18,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:18,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301142500]
[2021-06-12 21:19:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-12 21:19:18,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:18,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301142500]
[2021-06-12 21:19:18,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301142500] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:18,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359680259]
[2021-06-12 21:19:18,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:18,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-06-12 21:19:18,256 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-12 21:19:18,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359680259] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:18,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:18,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2021-06-12 21:19:18,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803936474]
[2021-06-12 21:19:18,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-06-12 21:19:18,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:18,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-06-12 21:19:18,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2021-06-12 21:19:18,314 INFO L87 Difference]: Start difference. First operand 6547 states and 21866 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:18,419 INFO L93 Difference]: Finished difference Result 8397 states and 27709 transitions.
[2021-06-12 21:19:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-06-12 21:19:18,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-06-12 21:19:18,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:18,436 INFO L225 Difference]: With dead ends: 8397
[2021-06-12 21:19:18,436 INFO L226 Difference]: Without dead ends: 8397
[2021-06-12 21:19:18,437 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2021-06-12 21:19:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states.
[2021-06-12 21:19:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 6574.
[2021-06-12 21:19:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6574 states, 6573 states have (on average 3.3476342613722805) internal successors, (22004), 6573 states have internal predecessors, (22004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 22004 transitions.
[2021-06-12 21:19:18,577 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 22004 transitions. Word has length 32
[2021-06-12 21:19:18,577 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:18,577 INFO L482 AbstractCegarLoop]: Abstraction has 6574 states and 22004 transitions.
[2021-06-12 21:19:18,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:18,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 22004 transitions.
[2021-06-12 21:19:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:18,586 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:18,586 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:18,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2021-06-12 21:19:18,801 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash -626027993, now seen corresponding path program 14 times
[2021-06-12 21:19:18,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:18,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226797392]
[2021-06-12 21:19:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:19:19,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:19,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226797392]
[2021-06-12 21:19:19,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226797392] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:19,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739347437]
[2021-06-12 21:19:19,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:19,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:19:19,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:19,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:19:19,125 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:19,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739347437] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:19,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:19,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:19:19,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434847234]
[2021-06-12 21:19:19,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:19:19,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:19,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:19:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:19:19,705 INFO L87 Difference]: Start difference. First operand 6574 states and 22004 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:21,482 INFO L93 Difference]: Finished difference Result 8244 states and 26601 transitions.
[2021-06-12 21:19:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:19:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:21,498 INFO L225 Difference]: With dead ends: 8244
[2021-06-12 21:19:21,498 INFO L226 Difference]: Without dead ends: 8170
[2021-06-12 21:19:21,499 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1441.2ms TimeCoverageRelationStatistics Valid=468, Invalid=2612, Unknown=0, NotChecked=0, Total=3080
[2021-06-12 21:19:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8170 states.
[2021-06-12 21:19:21,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8170 to 6796.
[2021-06-12 21:19:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6796 states, 6795 states have (on average 3.33495217071376) internal successors, (22661), 6795 states have internal predecessors, (22661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 22661 transitions.
[2021-06-12 21:19:21,632 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 22661 transitions. Word has length 34
[2021-06-12 21:19:21,632 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:21,632 INFO L482 AbstractCegarLoop]: Abstraction has 6796 states and 22661 transitions.
[2021-06-12 21:19:21,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 22661 transitions.
[2021-06-12 21:19:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:21,641 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:21,641 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:21,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2021-06-12 21:19:21,855 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:21,855 INFO L82 PathProgramCache]: Analyzing trace with hash -66991577, now seen corresponding path program 15 times
[2021-06-12 21:19:21,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:21,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856320981]
[2021-06-12 21:19:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:22,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:22,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856320981]
[2021-06-12 21:19:22,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856320981] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:22,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072248517]
[2021-06-12 21:19:22,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:22,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:19:22,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:19:22,214 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:22,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072248517] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:22,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:22,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33
[2021-06-12 21:19:22,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701266401]
[2021-06-12 21:19:22,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:19:22,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:22,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:19:22,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:19:22,847 INFO L87 Difference]: Start difference. First operand 6796 states and 22661 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:26,271 INFO L93 Difference]: Finished difference Result 12070 states and 38381 transitions.
[2021-06-12 21:19:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2021-06-12 21:19:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:26,293 INFO L225 Difference]: With dead ends: 12070
[2021-06-12 21:19:26,293 INFO L226 Difference]: Without dead ends: 11996
[2021-06-12 21:19:26,294 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 2797.3ms TimeCoverageRelationStatistics Valid=1280, Invalid=6376, Unknown=0, NotChecked=0, Total=7656
[2021-06-12 21:19:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11996 states.
[2021-06-12 21:19:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11996 to 7004.
[2021-06-12 21:19:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7004 states, 7003 states have (on average 3.3399971440811083) internal successors, (23390), 7003 states have internal predecessors, (23390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 23390 transitions.
[2021-06-12 21:19:26,465 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 23390 transitions. Word has length 34
[2021-06-12 21:19:26,466 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:26,466 INFO L482 AbstractCegarLoop]: Abstraction has 7004 states and 23390 transitions.
[2021-06-12 21:19:26,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 23390 transitions.
[2021-06-12 21:19:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:26,475 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:26,475 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:26,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:26,691 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1955785949, now seen corresponding path program 16 times
[2021-06-12 21:19:26,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:26,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964014514]
[2021-06-12 21:19:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:26,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:26,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964014514]
[2021-06-12 21:19:26,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964014514] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:26,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225276559]
[2021-06-12 21:19:26,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:26,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:19:26,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:26,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:19:26,948 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:27,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225276559] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:27,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:27,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:19:27,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275982731]
[2021-06-12 21:19:27,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:19:27,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:27,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:19:27,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:19:27,589 INFO L87 Difference]: Start difference. First operand 7004 states and 23390 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:29,641 INFO L93 Difference]: Finished difference Result 13107 states and 41620 transitions.
[2021-06-12 21:19:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2021-06-12 21:19:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:29,663 INFO L225 Difference]: With dead ends: 13107
[2021-06-12 21:19:29,663 INFO L226 Difference]: Without dead ends: 13046
[2021-06-12 21:19:29,664 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1992.9ms TimeCoverageRelationStatistics Valid=901, Invalid=3929, Unknown=0, NotChecked=0, Total=4830
[2021-06-12 21:19:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13046 states.
[2021-06-12 21:19:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13046 to 7052.
[2021-06-12 21:19:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7052 states, 7051 states have (on average 3.3450574386611827) internal successors, (23586), 7051 states have internal predecessors, (23586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 23586 transitions.
[2021-06-12 21:19:29,838 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 23586 transitions. Word has length 34
[2021-06-12 21:19:29,838 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:29,838 INFO L482 AbstractCegarLoop]: Abstraction has 7052 states and 23586 transitions.
[2021-06-12 21:19:29,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 23586 transitions.
[2021-06-12 21:19:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:29,848 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:29,848 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:30,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:30,061 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:30,061 INFO L82 PathProgramCache]: Analyzing trace with hash 311935523, now seen corresponding path program 17 times
[2021-06-12 21:19:30,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:30,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308014040]
[2021-06-12 21:19:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:30,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:30,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308014040]
[2021-06-12 21:19:30,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308014040] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:30,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830594895]
[2021-06-12 21:19:30,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:30,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:19:30,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:30,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:19:30,321 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:30,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830594895] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:30,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:30,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:19:30,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994056235]
[2021-06-12 21:19:30,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:19:30,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:19:30,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:19:30,947 INFO L87 Difference]: Start difference. First operand 7052 states and 23586 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:34,230 INFO L93 Difference]: Finished difference Result 15153 states and 48281 transitions.
[2021-06-12 21:19:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2021-06-12 21:19:34,231 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:34,252 INFO L225 Difference]: With dead ends: 15153
[2021-06-12 21:19:34,252 INFO L226 Difference]: Without dead ends: 15073
[2021-06-12 21:19:34,253 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 2708.9ms TimeCoverageRelationStatistics Valid=1274, Invalid=6558, Unknown=0, NotChecked=0, Total=7832
[2021-06-12 21:19:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15073 states.
[2021-06-12 21:19:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15073 to 7120.
[2021-06-12 21:19:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.345975558364939) internal successors, (23820), 7119 states have internal predecessors, (23820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 23820 transitions.
[2021-06-12 21:19:34,415 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 23820 transitions. Word has length 34
[2021-06-12 21:19:34,415 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:34,415 INFO L482 AbstractCegarLoop]: Abstraction has 7120 states and 23820 transitions.
[2021-06-12 21:19:34,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 23820 transitions.
[2021-06-12 21:19:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:34,424 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:34,425 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:34,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:34,640 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1634184655, now seen corresponding path program 18 times
[2021-06-12 21:19:34,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:34,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380548669]
[2021-06-12 21:19:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:34,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:34,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380548669]
[2021-06-12 21:19:34,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380548669] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:34,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776435896]
[2021-06-12 21:19:34,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:34,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-06-12 21:19:34,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:34,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:19:34,883 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:35,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776435896] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:35,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:35,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33
[2021-06-12 21:19:35,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890848474]
[2021-06-12 21:19:35,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:19:35,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:19:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:19:35,426 INFO L87 Difference]: Start difference. First operand 7120 states and 23820 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:37,233 INFO L93 Difference]: Finished difference Result 10976 states and 35019 transitions.
[2021-06-12 21:19:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2021-06-12 21:19:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:37,249 INFO L225 Difference]: With dead ends: 10976
[2021-06-12 21:19:37,249 INFO L226 Difference]: Without dead ends: 10902
[2021-06-12 21:19:37,250 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1341.0ms TimeCoverageRelationStatistics Valid=436, Invalid=2756, Unknown=0, NotChecked=0, Total=3192
[2021-06-12 21:19:37,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10902 states.
[2021-06-12 21:19:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10902 to 7382.
[2021-06-12 21:19:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 7381 states have (on average 3.341959084134941) internal successors, (24667), 7381 states have internal predecessors, (24667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 24667 transitions.
[2021-06-12 21:19:37,396 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 24667 transitions. Word has length 34
[2021-06-12 21:19:37,396 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:37,396 INFO L482 AbstractCegarLoop]: Abstraction has 7382 states and 24667 transitions.
[2021-06-12 21:19:37,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 24667 transitions.
[2021-06-12 21:19:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:37,406 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:37,406 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:37,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:37,623 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:37,623 INFO L82 PathProgramCache]: Analyzing trace with hash -981282097, now seen corresponding path program 19 times
[2021-06-12 21:19:37,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:37,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597573674]
[2021-06-12 21:19:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:37,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:37,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597573674]
[2021-06-12 21:19:37,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597573674] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:37,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084934017]
[2021-06-12 21:19:37,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:37,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:19:37,928 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:38,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084934017] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:38,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:38,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:19:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757253387]
[2021-06-12 21:19:38,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:19:38,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:19:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:19:38,570 INFO L87 Difference]: Start difference. First operand 7382 states and 24667 transitions. Second operand has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:42,032 INFO L93 Difference]: Finished difference Result 14490 states and 46802 transitions.
[2021-06-12 21:19:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2021-06-12 21:19:42,032 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:42,053 INFO L225 Difference]: With dead ends: 14490
[2021-06-12 21:19:42,054 INFO L226 Difference]: Without dead ends: 14422
[2021-06-12 21:19:42,055 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2698 ImplicationChecksByTransitivity, 2842.5ms TimeCoverageRelationStatistics Valid=1500, Invalid=7430, Unknown=0, NotChecked=0, Total=8930
[2021-06-12 21:19:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14422 states.
[2021-06-12 21:19:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14422 to 7458.
[2021-06-12 21:19:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 7457 states have (on average 3.347995172321309) internal successors, (24966), 7457 states have internal predecessors, (24966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 24966 transitions.
[2021-06-12 21:19:42,227 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 24966 transitions. Word has length 34
[2021-06-12 21:19:42,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:42,227 INFO L482 AbstractCegarLoop]: Abstraction has 7458 states and 24966 transitions.
[2021-06-12 21:19:42,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 24966 transitions.
[2021-06-12 21:19:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:42,236 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:42,237 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:42,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93
[2021-06-12 21:19:42,445 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash -263714097, now seen corresponding path program 20 times
[2021-06-12 21:19:42,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:42,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783803643]
[2021-06-12 21:19:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:42,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:42,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783803643]
[2021-06-12 21:19:42,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783803643] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:42,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130153047]
[2021-06-12 21:19:42,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:42,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:19:42,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:42,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:19:42,797 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:43,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130153047] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:43,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:43,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 34
[2021-06-12 21:19:43,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85891300]
[2021-06-12 21:19:43,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:19:43,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:19:43,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:19:43,415 INFO L87 Difference]: Start difference. First operand 7458 states and 24966 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:47,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:47,217 INFO L93 Difference]: Finished difference Result 16738 states and 53735 transitions.
[2021-06-12 21:19:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2021-06-12 21:19:47,218 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:47,244 INFO L225 Difference]: With dead ends: 16738
[2021-06-12 21:19:47,244 INFO L226 Difference]: Without dead ends: 16649
[2021-06-12 21:19:47,245 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 3112.7ms TimeCoverageRelationStatistics Valid=1578, Invalid=7352, Unknown=0, NotChecked=0, Total=8930
[2021-06-12 21:19:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16649 states.
[2021-06-12 21:19:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16649 to 7399.
[2021-06-12 21:19:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 7398 states have (on average 3.34279535009462) internal successors, (24730), 7398 states have internal predecessors, (24730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 24730 transitions.
[2021-06-12 21:19:47,428 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 24730 transitions. Word has length 34
[2021-06-12 21:19:47,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:47,436 INFO L482 AbstractCegarLoop]: Abstraction has 7399 states and 24730 transitions.
[2021-06-12 21:19:47,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 24730 transitions.
[2021-06-12 21:19:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:47,445 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:47,445 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:47,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:47,661 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:47,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:47,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1457868367, now seen corresponding path program 21 times
[2021-06-12 21:19:47,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:47,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892588283]
[2021-06-12 21:19:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:47,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:47,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892588283]
[2021-06-12 21:19:47,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892588283] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:47,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628135756]
[2021-06-12 21:19:47,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:47,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:19:47,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:47,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:19:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:48,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628135756] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:48,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:48,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:19:48,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749486129]
[2021-06-12 21:19:48,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:19:48,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:48,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:19:48,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:19:48,448 INFO L87 Difference]: Start difference. First operand 7399 states and 24730 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:52,050 INFO L93 Difference]: Finished difference Result 11618 states and 37622 transitions.
[2021-06-12 21:19:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2021-06-12 21:19:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:52,068 INFO L225 Difference]: With dead ends: 11618
[2021-06-12 21:19:52,068 INFO L226 Difference]: Without dead ends: 11538
[2021-06-12 21:19:52,069 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 2936.2ms TimeCoverageRelationStatistics Valid=1448, Invalid=6562, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:19:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11538 states.
[2021-06-12 21:19:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11538 to 7515.
[2021-06-12 21:19:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7514 states have (on average 3.344423742347618) internal successors, (25130), 7514 states have internal predecessors, (25130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 25130 transitions.
[2021-06-12 21:19:52,214 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 25130 transitions. Word has length 34
[2021-06-12 21:19:52,215 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:52,215 INFO L482 AbstractCegarLoop]: Abstraction has 7515 states and 25130 transitions.
[2021-06-12 21:19:52,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 25130 transitions.
[2021-06-12 21:19:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:52,223 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:52,223 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:52,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115
[2021-06-12 21:19:52,424 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash -695932121, now seen corresponding path program 22 times
[2021-06-12 21:19:52,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:52,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015335274]
[2021-06-12 21:19:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:52,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:52,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015335274]
[2021-06-12 21:19:52,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015335274] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:52,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899921155]
[2021-06-12 21:19:52,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:52,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:19:52,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:19:52,681 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:53,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899921155] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:53,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:53,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:19:53,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425205340]
[2021-06-12 21:19:53,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:19:53,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:53,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:19:53,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:19:53,217 INFO L87 Difference]: Start difference. First operand 7515 states and 25130 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:54,244 INFO L93 Difference]: Finished difference Result 9401 states and 30720 transitions.
[2021-06-12 21:19:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2021-06-12 21:19:54,244 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:54,257 INFO L225 Difference]: With dead ends: 9401
[2021-06-12 21:19:54,257 INFO L226 Difference]: Without dead ends: 9333
[2021-06-12 21:19:54,258 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 979.1ms TimeCoverageRelationStatistics Valid=387, Invalid=1869, Unknown=0, NotChecked=0, Total=2256
[2021-06-12 21:19:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states.
[2021-06-12 21:19:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7545.
[2021-06-12 21:19:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7545 states, 7544 states have (on average 3.345440084835631) internal successors, (25238), 7544 states have internal predecessors, (25238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7545 states to 7545 states and 25238 transitions.
[2021-06-12 21:19:54,389 INFO L78 Accepts]: Start accepts. Automaton has 7545 states and 25238 transitions. Word has length 34
[2021-06-12 21:19:54,389 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:54,390 INFO L482 AbstractCegarLoop]: Abstraction has 7545 states and 25238 transitions.
[2021-06-12 21:19:54,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7545 states and 25238 transitions.
[2021-06-12 21:19:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:54,398 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:54,398 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:54,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126
[2021-06-12 21:19:54,598 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:54,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:54,599 INFO L82 PathProgramCache]: Analyzing trace with hash 225770019, now seen corresponding path program 23 times
[2021-06-12 21:19:54,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:54,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704898221]
[2021-06-12 21:19:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:54,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:54,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704898221]
[2021-06-12 21:19:54,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704898221] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:54,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310528133]
[2021-06-12 21:19:54,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:54,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:19:54,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:54,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:19:54,826 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:55,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310528133] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:55,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:55,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:19:55,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155751934]
[2021-06-12 21:19:55,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:19:55,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:55,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:19:55,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:19:55,313 INFO L87 Difference]: Start difference. First operand 7545 states and 25238 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:56,522 INFO L93 Difference]: Finished difference Result 10842 states and 35698 transitions.
[2021-06-12 21:19:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-06-12 21:19:56,522 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:56,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:56,538 INFO L225 Difference]: With dead ends: 10842
[2021-06-12 21:19:56,538 INFO L226 Difference]: Without dead ends: 10762
[2021-06-12 21:19:56,538 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1089.9ms TimeCoverageRelationStatistics Valid=439, Invalid=2111, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:19:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states.
[2021-06-12 21:19:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 7545.
[2021-06-12 21:19:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7545 states, 7544 states have (on average 3.345440084835631) internal successors, (25238), 7544 states have internal predecessors, (25238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7545 states to 7545 states and 25238 transitions.
[2021-06-12 21:19:56,670 INFO L78 Accepts]: Start accepts. Automaton has 7545 states and 25238 transitions. Word has length 34
[2021-06-12 21:19:56,670 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:56,670 INFO L482 AbstractCegarLoop]: Abstraction has 7545 states and 25238 transitions.
[2021-06-12 21:19:56,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7545 states and 25238 transitions.
[2021-06-12 21:19:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:56,678 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:56,678 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:56,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:56,879 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash 155659983, now seen corresponding path program 24 times
[2021-06-12 21:19:56,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:56,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786733118]
[2021-06-12 21:19:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:57,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:57,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786733118]
[2021-06-12 21:19:57,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786733118] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:57,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027050506]
[2021-06-12 21:19:57,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:57,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:19:57,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:19:57,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:19:57,097 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:57,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027050506] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:57,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:57,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:19:57,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039306278]
[2021-06-12 21:19:57,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:19:57,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:57,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:19:57,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:19:57,611 INFO L87 Difference]: Start difference. First operand 7545 states and 25238 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:19:58,665 INFO L93 Difference]: Finished difference Result 10057 states and 33260 transitions.
[2021-06-12 21:19:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2021-06-12 21:19:58,665 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:19:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:19:58,680 INFO L225 Difference]: With dead ends: 10057
[2021-06-12 21:19:58,680 INFO L226 Difference]: Without dead ends: 9977
[2021-06-12 21:19:58,681 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1020.6ms TimeCoverageRelationStatistics Valid=426, Invalid=1830, Unknown=0, NotChecked=0, Total=2256
[2021-06-12 21:19:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9977 states.
[2021-06-12 21:19:58,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9977 to 7549.
[2021-06-12 21:19:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7549 states, 7548 states have (on average 3.34525702172761) internal successors, (25250), 7548 states have internal predecessors, (25250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7549 states to 7549 states and 25250 transitions.
[2021-06-12 21:19:58,808 INFO L78 Accepts]: Start accepts. Automaton has 7549 states and 25250 transitions. Word has length 34
[2021-06-12 21:19:58,808 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:19:58,808 INFO L482 AbstractCegarLoop]: Abstraction has 7549 states and 25250 transitions.
[2021-06-12 21:19:58,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:19:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7549 states and 25250 transitions.
[2021-06-12 21:19:58,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:19:58,817 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:19:58,817 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:19:59,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148
[2021-06-12 21:19:59,021 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:19:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:19:59,021 INFO L82 PathProgramCache]: Analyzing trace with hash 918964363, now seen corresponding path program 25 times
[2021-06-12 21:19:59,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:19:59,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405479195]
[2021-06-12 21:19:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:19:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:59,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:19:59,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405479195]
[2021-06-12 21:19:59,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405479195] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:59,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471504899]
[2021-06-12 21:19:59,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:19:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:19:59,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:19:59,329 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:19:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:19:59,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471504899] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:19:59,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:19:59,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:19:59,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768936364]
[2021-06-12 21:19:59,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:19:59,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:19:59,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:19:59,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:19:59,953 INFO L87 Difference]: Start difference. First operand 7549 states and 25250 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:01,500 INFO L93 Difference]: Finished difference Result 10304 states and 33237 transitions.
[2021-06-12 21:20:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2021-06-12 21:20:01,500 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:01,517 INFO L225 Difference]: With dead ends: 10304
[2021-06-12 21:20:01,517 INFO L226 Difference]: Without dead ends: 10170
[2021-06-12 21:20:01,518 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 1556.8ms TimeCoverageRelationStatistics Valid=588, Invalid=2834, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:20:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states.
[2021-06-12 21:20:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 7672.
[2021-06-12 21:20:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 7671 states have (on average 3.3451961934558727) internal successors, (25661), 7671 states have internal predecessors, (25661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 25661 transitions.
[2021-06-12 21:20:01,662 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 25661 transitions. Word has length 34
[2021-06-12 21:20:01,662 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:01,662 INFO L482 AbstractCegarLoop]: Abstraction has 7672 states and 25661 transitions.
[2021-06-12 21:20:01,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 25661 transitions.
[2021-06-12 21:20:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:01,682 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:01,682 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:01,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:01,889 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1636532363, now seen corresponding path program 26 times
[2021-06-12 21:20:01,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:01,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211479944]
[2021-06-12 21:20:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:02,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:02,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211479944]
[2021-06-12 21:20:02,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211479944] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:02,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025616720]
[2021-06-12 21:20:02,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:02,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:20:02,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:02,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:02,232 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:02,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025616720] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:02,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:02,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:20:02,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927511906]
[2021-06-12 21:20:02,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:02,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:02,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:02,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:02,763 INFO L87 Difference]: Start difference. First operand 7672 states and 25661 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:04,659 INFO L93 Difference]: Finished difference Result 13599 states and 43266 transitions.
[2021-06-12 21:20:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2021-06-12 21:20:04,659 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:04,680 INFO L225 Difference]: With dead ends: 13599
[2021-06-12 21:20:04,681 INFO L226 Difference]: Without dead ends: 13421
[2021-06-12 21:20:04,681 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1807.1ms TimeCoverageRelationStatistics Valid=814, Invalid=3346, Unknown=0, NotChecked=0, Total=4160
[2021-06-12 21:20:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states.
[2021-06-12 21:20:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 7674.
[2021-06-12 21:20:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7674 states, 7673 states have (on average 3.345236543724749) internal successors, (25668), 7673 states have internal predecessors, (25668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 25668 transitions.
[2021-06-12 21:20:04,845 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 25668 transitions. Word has length 34
[2021-06-12 21:20:04,845 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:04,845 INFO L482 AbstractCegarLoop]: Abstraction has 7674 states and 25668 transitions.
[2021-06-12 21:20:04,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 25668 transitions.
[2021-06-12 21:20:04,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:04,855 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:04,855 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:05,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170
[2021-06-12 21:20:05,055 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash -182677553, now seen corresponding path program 27 times
[2021-06-12 21:20:05,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:05,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756875000]
[2021-06-12 21:20:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:05,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:05,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756875000]
[2021-06-12 21:20:05,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756875000] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:05,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841242005]
[2021-06-12 21:20:05,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:05,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:20:05,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:05,289 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:05,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841242005] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:05,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:05,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:20:05,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213010233]
[2021-06-12 21:20:05,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:20:05,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:05,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:20:05,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:20:05,865 INFO L87 Difference]: Start difference. First operand 7674 states and 25668 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:06,946 INFO L93 Difference]: Finished difference Result 10242 states and 33864 transitions.
[2021-06-12 21:20:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2021-06-12 21:20:06,947 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:06,963 INFO L225 Difference]: With dead ends: 10242
[2021-06-12 21:20:06,963 INFO L226 Difference]: Without dead ends: 10162
[2021-06-12 21:20:06,963 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1099.6ms TimeCoverageRelationStatistics Valid=414, Invalid=1842, Unknown=0, NotChecked=0, Total=2256
[2021-06-12 21:20:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10162 states.
[2021-06-12 21:20:07,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10162 to 7686.
[2021-06-12 21:20:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7686 states, 7685 states have (on average 3.34469746258946) internal successors, (25704), 7685 states have internal predecessors, (25704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 25704 transitions.
[2021-06-12 21:20:07,097 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 25704 transitions. Word has length 34
[2021-06-12 21:20:07,097 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:07,097 INFO L482 AbstractCegarLoop]: Abstraction has 7686 states and 25704 transitions.
[2021-06-12 21:20:07,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 25704 transitions.
[2021-06-12 21:20:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:07,106 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:07,107 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:07,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:07,321 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:07,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1490931889, now seen corresponding path program 28 times
[2021-06-12 21:20:07,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:07,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547161715]
[2021-06-12 21:20:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:07,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:07,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547161715]
[2021-06-12 21:20:07,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547161715] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:07,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442282626]
[2021-06-12 21:20:07,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:07,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:20:07,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:07,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:07,584 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:08,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442282626] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:08,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:08,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:20:08,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586430290]
[2021-06-12 21:20:08,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:20:08,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:08,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:20:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:20:08,313 INFO L87 Difference]: Start difference. First operand 7686 states and 25704 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:09,497 INFO L93 Difference]: Finished difference Result 11237 states and 36295 transitions.
[2021-06-12 21:20:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:20:09,503 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:09,519 INFO L225 Difference]: With dead ends: 11237
[2021-06-12 21:20:09,519 INFO L226 Difference]: Without dead ends: 11176
[2021-06-12 21:20:09,520 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 1394.7ms TimeCoverageRelationStatistics Valid=474, Invalid=2496, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:20:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states.
[2021-06-12 21:20:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 7730.
[2021-06-12 21:20:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7730 states, 7729 states have (on average 3.3486867641350755) internal successors, (25882), 7729 states have internal predecessors, (25882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 25882 transitions.
[2021-06-12 21:20:09,661 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 25882 transitions. Word has length 34
[2021-06-12 21:20:09,661 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:09,661 INFO L482 AbstractCegarLoop]: Abstraction has 7730 states and 25882 transitions.
[2021-06-12 21:20:09,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 25882 transitions.
[2021-06-12 21:20:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:09,669 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:09,669 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:09,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable192
[2021-06-12 21:20:09,871 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash 776789583, now seen corresponding path program 29 times
[2021-06-12 21:20:09,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:09,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63122087]
[2021-06-12 21:20:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:10,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:10,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63122087]
[2021-06-12 21:20:10,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63122087] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:10,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80253732]
[2021-06-12 21:20:10,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:10,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:20:10,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:10,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:10,241 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:10,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80253732] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:10,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:10,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:20:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209863537]
[2021-06-12 21:20:10,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:20:10,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:20:10,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:20:10,772 INFO L87 Difference]: Start difference. First operand 7730 states and 25882 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:13,470 INFO L93 Difference]: Finished difference Result 15447 states and 50397 transitions.
[2021-06-12 21:20:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:20:13,471 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:13,496 INFO L225 Difference]: With dead ends: 15447
[2021-06-12 21:20:13,496 INFO L226 Difference]: Without dead ends: 15367
[2021-06-12 21:20:13,497 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 2432.1ms TimeCoverageRelationStatistics Valid=1019, Invalid=5143, Unknown=0, NotChecked=0, Total=6162
[2021-06-12 21:20:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states.
[2021-06-12 21:20:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 7685.
[2021-06-12 21:20:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 3.345002602811036) internal successors, (25703), 7684 states have internal predecessors, (25703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 25703 transitions.
[2021-06-12 21:20:13,671 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 25703 transitions. Word has length 34
[2021-06-12 21:20:13,671 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:13,671 INFO L482 AbstractCegarLoop]: Abstraction has 7685 states and 25703 transitions.
[2021-06-12 21:20:13,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 25703 transitions.
[2021-06-12 21:20:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:13,680 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:13,681 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:13,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:13,881 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:13,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:13,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1501827023, now seen corresponding path program 30 times
[2021-06-12 21:20:13,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:13,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54331632]
[2021-06-12 21:20:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:14,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:14,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54331632]
[2021-06-12 21:20:14,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54331632] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:14,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125140009]
[2021-06-12 21:20:14,099 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:14,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:20:14,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:14,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:14,155 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:14,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125140009] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:14,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:14,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:20:14,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460039301]
[2021-06-12 21:20:14,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:20:14,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:14,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:20:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:20:14,849 INFO L87 Difference]: Start difference. First operand 7685 states and 25703 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:15,868 INFO L93 Difference]: Finished difference Result 10155 states and 33589 transitions.
[2021-06-12 21:20:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2021-06-12 21:20:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:15,884 INFO L225 Difference]: With dead ends: 10155
[2021-06-12 21:20:15,885 INFO L226 Difference]: Without dead ends: 10075
[2021-06-12 21:20:15,885 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1218.6ms TimeCoverageRelationStatistics Valid=417, Invalid=1745, Unknown=0, NotChecked=0, Total=2162
[2021-06-12 21:20:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10075 states.
[2021-06-12 21:20:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10075 to 7685.
[2021-06-12 21:20:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 3.345002602811036) internal successors, (25703), 7684 states have internal predecessors, (25703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 25703 transitions.
[2021-06-12 21:20:16,014 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 25703 transitions. Word has length 34
[2021-06-12 21:20:16,014 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:16,014 INFO L482 AbstractCegarLoop]: Abstraction has 7685 states and 25703 transitions.
[2021-06-12 21:20:16,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 25703 transitions.
[2021-06-12 21:20:16,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:16,023 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:16,023 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:16,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214
[2021-06-12 21:20:16,225 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1856335409, now seen corresponding path program 31 times
[2021-06-12 21:20:16,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:16,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46196220]
[2021-06-12 21:20:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:16,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:16,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46196220]
[2021-06-12 21:20:16,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46196220] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:16,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591304451]
[2021-06-12 21:20:16,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:16,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:16,458 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:17,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591304451] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:17,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:17,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:20:17,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46457553]
[2021-06-12 21:20:17,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:17,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:17,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=864, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:17,069 INFO L87 Difference]: Start difference. First operand 7685 states and 25703 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:18,057 INFO L93 Difference]: Finished difference Result 9851 states and 32529 transitions.
[2021-06-12 21:20:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-06-12 21:20:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:18,071 INFO L225 Difference]: With dead ends: 9851
[2021-06-12 21:20:18,072 INFO L226 Difference]: Without dead ends: 9771
[2021-06-12 21:20:18,072 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1047.2ms TimeCoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256
[2021-06-12 21:20:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states.
[2021-06-12 21:20:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 7685.
[2021-06-12 21:20:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 3.345002602811036) internal successors, (25703), 7684 states have internal predecessors, (25703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 25703 transitions.
[2021-06-12 21:20:18,195 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 25703 transitions. Word has length 34
[2021-06-12 21:20:18,195 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:18,195 INFO L482 AbstractCegarLoop]: Abstraction has 7685 states and 25703 transitions.
[2021-06-12 21:20:18,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 25703 transitions.
[2021-06-12 21:20:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:18,203 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:18,203 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:18,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:18,404 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2021710497, now seen corresponding path program 32 times
[2021-06-12 21:20:18,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:18,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515222563]
[2021-06-12 21:20:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:18,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:18,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515222563]
[2021-06-12 21:20:18,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515222563] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:18,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420550350]
[2021-06-12 21:20:18,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:18,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:20:18,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:18,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:18,671 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:19,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420550350] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:19,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:19,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:20:19,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777815040]
[2021-06-12 21:20:19,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:19,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:19,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:19,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:19,166 INFO L87 Difference]: Start difference. First operand 7685 states and 25703 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:21,669 INFO L93 Difference]: Finished difference Result 12991 states and 42326 transitions.
[2021-06-12 21:20:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:20:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:21,691 INFO L225 Difference]: With dead ends: 12991
[2021-06-12 21:20:21,691 INFO L226 Difference]: Without dead ends: 12911
[2021-06-12 21:20:21,692 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 2013.2ms TimeCoverageRelationStatistics Valid=863, Invalid=4539, Unknown=0, NotChecked=0, Total=5402
[2021-06-12 21:20:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12911 states.
[2021-06-12 21:20:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12911 to 7733.
[2021-06-12 21:20:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 7732 states have (on average 3.3441541645111226) internal successors, (25857), 7732 states have internal predecessors, (25857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 25857 transitions.
[2021-06-12 21:20:21,858 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 25857 transitions. Word has length 34
[2021-06-12 21:20:21,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:21,859 INFO L482 AbstractCegarLoop]: Abstraction has 7733 states and 25857 transitions.
[2021-06-12 21:20:21,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 25857 transitions.
[2021-06-12 21:20:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:21,868 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:21,868 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:22,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236
[2021-06-12 21:20:22,081 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash 119456311, now seen corresponding path program 33 times
[2021-06-12 21:20:22,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:22,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197555536]
[2021-06-12 21:20:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:22,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:22,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197555536]
[2021-06-12 21:20:22,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197555536] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:22,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805309078]
[2021-06-12 21:20:22,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:22,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:20:22,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:22,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:22,397 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:22,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805309078] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:22,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:22,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:20:22,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246128356]
[2021-06-12 21:20:22,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:20:22,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:22,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:20:22,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:20:22,954 INFO L87 Difference]: Start difference. First operand 7733 states and 25857 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:24,389 INFO L93 Difference]: Finished difference Result 10389 states and 33911 transitions.
[2021-06-12 21:20:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-06-12 21:20:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:24,404 INFO L225 Difference]: With dead ends: 10389
[2021-06-12 21:20:24,404 INFO L226 Difference]: Without dead ends: 10315
[2021-06-12 21:20:24,405 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 1195.7ms TimeCoverageRelationStatistics Valid=437, Invalid=2425, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:20:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states.
[2021-06-12 21:20:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 7770.
[2021-06-12 21:20:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 7769 states have (on average 3.3457330415754925) internal successors, (25993), 7769 states have internal predecessors, (25993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 25993 transitions.
[2021-06-12 21:20:24,538 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 25993 transitions. Word has length 34
[2021-06-12 21:20:24,538 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:24,538 INFO L482 AbstractCegarLoop]: Abstraction has 7770 states and 25993 transitions.
[2021-06-12 21:20:24,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 25993 transitions.
[2021-06-12 21:20:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:24,547 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:24,547 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:24,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247
[2021-06-12 21:20:24,748 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash 971048415, now seen corresponding path program 34 times
[2021-06-12 21:20:24,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:24,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279457148]
[2021-06-12 21:20:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:24,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:24,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279457148]
[2021-06-12 21:20:24,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279457148] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:24,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831410416]
[2021-06-12 21:20:24,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-06-12 21:20:24,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:20:24,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:24,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:24,992 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:25,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831410416] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:25,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:25,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:20:25,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089503932]
[2021-06-12 21:20:25,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:25,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:25,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:25,518 INFO L87 Difference]: Start difference. First operand 7770 states and 25993 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:26,897 INFO L93 Difference]: Finished difference Result 11540 states and 38141 transitions.
[2021-06-12 21:20:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-12 21:20:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:26,917 INFO L225 Difference]: With dead ends: 11540
[2021-06-12 21:20:26,917 INFO L226 Difference]: Without dead ends: 11460
[2021-06-12 21:20:26,917 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1111.6ms TimeCoverageRelationStatistics Valid=447, Invalid=2205, Unknown=0, NotChecked=0, Total=2652
[2021-06-12 21:20:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11460 states.
[2021-06-12 21:20:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11460 to 7774.
[2021-06-12 21:20:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7774 states, 7773 states have (on average 3.3455551267206998) internal successors, (26005), 7773 states have internal predecessors, (26005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7774 states to 7774 states and 26005 transitions.
[2021-06-12 21:20:27,074 INFO L78 Accepts]: Start accepts. Automaton has 7774 states and 26005 transitions. Word has length 34
[2021-06-12 21:20:27,075 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:27,075 INFO L482 AbstractCegarLoop]: Abstraction has 7774 states and 26005 transitions.
[2021-06-12 21:20:27,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7774 states and 26005 transitions.
[2021-06-12 21:20:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:27,084 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:27,084 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:27,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:27,284 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:27,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1734352795, now seen corresponding path program 35 times
[2021-06-12 21:20:27,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:27,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090113490]
[2021-06-12 21:20:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:27,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:27,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090113490]
[2021-06-12 21:20:27,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090113490] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:27,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089264475]
[2021-06-12 21:20:27,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:27,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:20:27,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:27,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:27,518 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:28,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089264475] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:28,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:28,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:20:28,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31264369]
[2021-06-12 21:20:28,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:20:28,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:20:28,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:20:28,136 INFO L87 Difference]: Start difference. First operand 7774 states and 26005 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:29,750 INFO L93 Difference]: Finished difference Result 11043 states and 35560 transitions.
[2021-06-12 21:20:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2021-06-12 21:20:29,750 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:29,768 INFO L225 Difference]: With dead ends: 11043
[2021-06-12 21:20:29,768 INFO L226 Difference]: Without dead ends: 10909
[2021-06-12 21:20:29,768 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1433.6ms TimeCoverageRelationStatistics Valid=597, Invalid=3063, Unknown=0, NotChecked=0, Total=3660
[2021-06-12 21:20:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10909 states.
[2021-06-12 21:20:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10909 to 7897.
[2021-06-12 21:20:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7896 states have (on average 3.3456180344478215) internal successors, (26417), 7896 states have internal predecessors, (26417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 26417 transitions.
[2021-06-12 21:20:29,911 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 26417 transitions. Word has length 34
[2021-06-12 21:20:29,911 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:29,911 INFO L482 AbstractCegarLoop]: Abstraction has 7897 states and 26417 transitions.
[2021-06-12 21:20:29,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 26417 transitions.
[2021-06-12 21:20:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:29,920 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:29,920 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:30,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269
[2021-06-12 21:20:30,120 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:30,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1843046501, now seen corresponding path program 36 times
[2021-06-12 21:20:30,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:30,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157775307]
[2021-06-12 21:20:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:30,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:30,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157775307]
[2021-06-12 21:20:30,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157775307] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:30,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17898604]
[2021-06-12 21:20:30,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-06-12 21:20:30,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:20:30,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:30,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:30,435 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:30,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17898604] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:30,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:30,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:20:30,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591868897]
[2021-06-12 21:20:30,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:30,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:30,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:30,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:30,913 INFO L87 Difference]: Start difference. First operand 7897 states and 26417 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:32,836 INFO L93 Difference]: Finished difference Result 14412 states and 45857 transitions.
[2021-06-12 21:20:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2021-06-12 21:20:32,837 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:32,858 INFO L225 Difference]: With dead ends: 14412
[2021-06-12 21:20:32,858 INFO L226 Difference]: Without dead ends: 14234
[2021-06-12 21:20:32,858 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 1692.6ms TimeCoverageRelationStatistics Valid=810, Invalid=3480, Unknown=0, NotChecked=0, Total=4290
[2021-06-12 21:20:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14234 states.
[2021-06-12 21:20:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14234 to 7884.
[2021-06-12 21:20:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7884 states, 7883 states have (on average 3.344792591652924) internal successors, (26367), 7883 states have internal predecessors, (26367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 26367 transitions.
[2021-06-12 21:20:33,015 INFO L78 Accepts]: Start accepts. Automaton has 7884 states and 26367 transitions. Word has length 34
[2021-06-12 21:20:33,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:33,015 INFO L482 AbstractCegarLoop]: Abstraction has 7884 states and 26367 transitions.
[2021-06-12 21:20:33,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7884 states and 26367 transitions.
[2021-06-12 21:20:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:33,023 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:33,023 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:33,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:33,224 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:33,224 INFO L82 PathProgramCache]: Analyzing trace with hash 632710879, now seen corresponding path program 37 times
[2021-06-12 21:20:33,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:33,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815933726]
[2021-06-12 21:20:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:33,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:33,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815933726]
[2021-06-12 21:20:33,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815933726] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:33,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704480395]
[2021-06-12 21:20:33,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:33,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:33,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704480395] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:33,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:33,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:20:33,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906745719]
[2021-06-12 21:20:33,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:33,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:33,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:33,948 INFO L87 Difference]: Start difference. First operand 7884 states and 26367 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:35,179 INFO L93 Difference]: Finished difference Result 11462 states and 37893 transitions.
[2021-06-12 21:20:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:20:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:35,198 INFO L225 Difference]: With dead ends: 11462
[2021-06-12 21:20:35,198 INFO L226 Difference]: Without dead ends: 11382
[2021-06-12 21:20:35,198 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1087.3ms TimeCoverageRelationStatistics Valid=421, Invalid=2129, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:20:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11382 states.
[2021-06-12 21:20:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11382 to 7876.
[2021-06-12 21:20:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7875 states have (on average 3.345142857142857) internal successors, (26343), 7875 states have internal predecessors, (26343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 26343 transitions.
[2021-06-12 21:20:35,339 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 26343 transitions. Word has length 34
[2021-06-12 21:20:35,340 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:35,340 INFO L482 AbstractCegarLoop]: Abstraction has 7876 states and 26343 transitions.
[2021-06-12 21:20:35,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 26343 transitions.
[2021-06-12 21:20:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:35,352 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:35,352 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:35,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291
[2021-06-12 21:20:35,553 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1437152207, now seen corresponding path program 38 times
[2021-06-12 21:20:35,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:35,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21479146]
[2021-06-12 21:20:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:35,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:35,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21479146]
[2021-06-12 21:20:35,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21479146] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:35,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752041714]
[2021-06-12 21:20:35,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:35,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:20:35,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:35,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:35,807 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:36,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752041714] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:36,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:36,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:20:36,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338128435]
[2021-06-12 21:20:36,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:36,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:36,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:36,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=889, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:36,320 INFO L87 Difference]: Start difference. First operand 7876 states and 26343 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:39,061 INFO L93 Difference]: Finished difference Result 11431 states and 37218 transitions.
[2021-06-12 21:20:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:20:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:39,080 INFO L225 Difference]: With dead ends: 11431
[2021-06-12 21:20:39,080 INFO L226 Difference]: Without dead ends: 11364
[2021-06-12 21:20:39,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 2276.9ms TimeCoverageRelationStatistics Valid=876, Invalid=4674, Unknown=0, NotChecked=0, Total=5550
[2021-06-12 21:20:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11364 states.
[2021-06-12 21:20:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11364 to 8088.
[2021-06-12 21:20:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8088 states, 8087 states have (on average 3.344503524174601) internal successors, (27047), 8087 states have internal predecessors, (27047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 27047 transitions.
[2021-06-12 21:20:39,233 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 27047 transitions. Word has length 34
[2021-06-12 21:20:39,233 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:39,233 INFO L482 AbstractCegarLoop]: Abstraction has 8088 states and 27047 transitions.
[2021-06-12 21:20:39,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 27047 transitions.
[2021-06-12 21:20:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:39,243 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:39,243 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:39,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302
[2021-06-12 21:20:39,443 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:39,444 INFO L82 PathProgramCache]: Analyzing trace with hash -716648281, now seen corresponding path program 39 times
[2021-06-12 21:20:39,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:39,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375550755]
[2021-06-12 21:20:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:39,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:39,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375550755]
[2021-06-12 21:20:39,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375550755] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:39,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137807961]
[2021-06-12 21:20:39,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:39,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:20:39,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:39,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:39,679 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:40,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137807961] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:40,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:40,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:20:40,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131206458]
[2021-06-12 21:20:40,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:20:40,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:40,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:20:40,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:20:40,308 INFO L87 Difference]: Start difference. First operand 8088 states and 27047 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:42,277 INFO L93 Difference]: Finished difference Result 11398 states and 37361 transitions.
[2021-06-12 21:20:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2021-06-12 21:20:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:42,299 INFO L225 Difference]: With dead ends: 11398
[2021-06-12 21:20:42,299 INFO L226 Difference]: Without dead ends: 11324
[2021-06-12 21:20:42,300 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 1849.7ms TimeCoverageRelationStatistics Valid=610, Invalid=3172, Unknown=0, NotChecked=0, Total=3782
[2021-06-12 21:20:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11324 states.
[2021-06-12 21:20:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11324 to 8124.
[2021-06-12 21:20:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8124 states, 8123 states have (on average 3.345931306167672) internal successors, (27179), 8123 states have internal predecessors, (27179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8124 states to 8124 states and 27179 transitions.
[2021-06-12 21:20:42,434 INFO L78 Accepts]: Start accepts. Automaton has 8124 states and 27179 transitions. Word has length 34
[2021-06-12 21:20:42,434 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:42,434 INFO L482 AbstractCegarLoop]: Abstraction has 8124 states and 27179 transitions.
[2021-06-12 21:20:42,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8124 states and 27179 transitions.
[2021-06-12 21:20:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:42,443 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:42,443 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:42,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:42,644 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 134943823, now seen corresponding path program 40 times
[2021-06-12 21:20:42,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:42,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508006782]
[2021-06-12 21:20:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:42,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:42,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508006782]
[2021-06-12 21:20:42,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508006782] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:42,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482243399]
[2021-06-12 21:20:42,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-06-12 21:20:42,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:20:42,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:42,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:42,966 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:43,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482243399] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:43,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:43,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:20:43,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366451784]
[2021-06-12 21:20:43,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:43,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:43,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:43,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:43,500 INFO L87 Difference]: Start difference. First operand 8124 states and 27179 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:44,794 INFO L93 Difference]: Finished difference Result 12758 states and 41655 transitions.
[2021-06-12 21:20:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-12 21:20:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:44,813 INFO L225 Difference]: With dead ends: 12758
[2021-06-12 21:20:44,813 INFO L226 Difference]: Without dead ends: 12678
[2021-06-12 21:20:44,814 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1337.4ms TimeCoverageRelationStatistics Valid=499, Invalid=2153, Unknown=0, NotChecked=0, Total=2652
[2021-06-12 21:20:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states.
[2021-06-12 21:20:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 8126.
[2021-06-12 21:20:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 8125 states have (on average 3.345846153846154) internal successors, (27185), 8125 states have internal predecessors, (27185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 27185 transitions.
[2021-06-12 21:20:45,004 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 27185 transitions. Word has length 34
[2021-06-12 21:20:45,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:45,004 INFO L482 AbstractCegarLoop]: Abstraction has 8126 states and 27185 transitions.
[2021-06-12 21:20:45,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:45,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 27185 transitions.
[2021-06-12 21:20:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:45,013 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:45,013 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:45,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324
[2021-06-12 21:20:45,214 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash 898248203, now seen corresponding path program 41 times
[2021-06-12 21:20:45,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:45,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107004669]
[2021-06-12 21:20:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:45,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:45,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107004669]
[2021-06-12 21:20:45,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107004669] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:45,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964741656]
[2021-06-12 21:20:45,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:45,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:20:45,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:45,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:45,508 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:46,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964741656] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:46,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:46,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:20:46,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130066835]
[2021-06-12 21:20:46,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:20:46,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:46,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:20:46,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:20:46,088 INFO L87 Difference]: Start difference. First operand 8126 states and 27185 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:48,589 INFO L93 Difference]: Finished difference Result 13402 states and 43284 transitions.
[2021-06-12 21:20:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2021-06-12 21:20:48,593 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:48,615 INFO L225 Difference]: With dead ends: 13402
[2021-06-12 21:20:48,615 INFO L226 Difference]: Without dead ends: 13334
[2021-06-12 21:20:48,615 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 2144.1ms TimeCoverageRelationStatistics Valid=958, Invalid=4444, Unknown=0, NotChecked=0, Total=5402
[2021-06-12 21:20:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13334 states.
[2021-06-12 21:20:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13334 to 8624.
[2021-06-12 21:20:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8624 states, 8623 states have (on average 3.339325060883683) internal successors, (28795), 8623 states have internal predecessors, (28795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8624 states to 8624 states and 28795 transitions.
[2021-06-12 21:20:48,780 INFO L78 Accepts]: Start accepts. Automaton has 8624 states and 28795 transitions. Word has length 34
[2021-06-12 21:20:48,781 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:48,781 INFO L482 AbstractCegarLoop]: Abstraction has 8624 states and 28795 transitions.
[2021-06-12 21:20:48,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8624 states and 28795 transitions.
[2021-06-12 21:20:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:48,790 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:48,790 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:48,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:48,991 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:48,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1615816203, now seen corresponding path program 42 times
[2021-06-12 21:20:48,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:48,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765791323]
[2021-06-12 21:20:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:49,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:49,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765791323]
[2021-06-12 21:20:49,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765791323] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:49,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760560399]
[2021-06-12 21:20:49,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:49,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:20:49,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:49,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:49,306 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:49,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760560399] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:49,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:49,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:20:49,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216972860]
[2021-06-12 21:20:49,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:49,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:49,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:49,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:49,809 INFO L87 Difference]: Start difference. First operand 8624 states and 28795 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:51,471 INFO L93 Difference]: Finished difference Result 16986 states and 55205 transitions.
[2021-06-12 21:20:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2021-06-12 21:20:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:51,499 INFO L225 Difference]: With dead ends: 16986
[2021-06-12 21:20:51,499 INFO L226 Difference]: Without dead ends: 16888
[2021-06-12 21:20:51,499 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1469.8ms TimeCoverageRelationStatistics Valid=612, Invalid=2580, Unknown=0, NotChecked=0, Total=3192
[2021-06-12 21:20:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16888 states.
[2021-06-12 21:20:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16888 to 8622.
[2021-06-12 21:20:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8622 states, 8621 states have (on average 3.3391717898155666) internal successors, (28787), 8621 states have internal predecessors, (28787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8622 states to 8622 states and 28787 transitions.
[2021-06-12 21:20:51,687 INFO L78 Accepts]: Start accepts. Automaton has 8622 states and 28787 transitions. Word has length 34
[2021-06-12 21:20:51,687 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:51,687 INFO L482 AbstractCegarLoop]: Abstraction has 8622 states and 28787 transitions.
[2021-06-12 21:20:51,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 8622 states and 28787 transitions.
[2021-06-12 21:20:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:51,696 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:51,696 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:51,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable346
[2021-06-12 21:20:51,897 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -203393713, now seen corresponding path program 43 times
[2021-06-12 21:20:51,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:51,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129666012]
[2021-06-12 21:20:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:52,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:52,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129666012]
[2021-06-12 21:20:52,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129666012] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:52,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310327388]
[2021-06-12 21:20:52,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:52,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:52,136 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:52,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310327388] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:52,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:52,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:20:52,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668303653]
[2021-06-12 21:20:52,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:20:52,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:52,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:20:52,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:20:52,692 INFO L87 Difference]: Start difference. First operand 8622 states and 28787 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:54,144 INFO L93 Difference]: Finished difference Result 14190 states and 46183 transitions.
[2021-06-12 21:20:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-12 21:20:54,144 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:54,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:54,166 INFO L225 Difference]: With dead ends: 14190
[2021-06-12 21:20:54,166 INFO L226 Difference]: Without dead ends: 14110
[2021-06-12 21:20:54,167 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1286.4ms TimeCoverageRelationStatistics Valid=507, Invalid=2249, Unknown=0, NotChecked=0, Total=2756
[2021-06-12 21:20:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14110 states.
[2021-06-12 21:20:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14110 to 8630.
[2021-06-12 21:20:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8630 states, 8629 states have (on average 3.3388573415227722) internal successors, (28811), 8629 states have internal predecessors, (28811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 28811 transitions.
[2021-06-12 21:20:54,336 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 28811 transitions. Word has length 34
[2021-06-12 21:20:54,336 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:54,336 INFO L482 AbstractCegarLoop]: Abstraction has 8630 states and 28811 transitions.
[2021-06-12 21:20:54,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 28811 transitions.
[2021-06-12 21:20:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:54,345 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:54,345 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:54,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:54,546 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:54,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:54,546 INFO L82 PathProgramCache]: Analyzing trace with hash -115829921, now seen corresponding path program 44 times
[2021-06-12 21:20:54,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:54,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931681131]
[2021-06-12 21:20:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:54,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:54,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931681131]
[2021-06-12 21:20:54,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931681131] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:54,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846857997]
[2021-06-12 21:20:54,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:54,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:20:54,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:54,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:20:54,793 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:55,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846857997] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:55,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:55,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:20:55,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037849239]
[2021-06-12 21:20:55,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:20:55,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:20:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:20:55,299 INFO L87 Difference]: Start difference. First operand 8630 states and 28811 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:20:58,088 INFO L93 Difference]: Finished difference Result 15771 states and 50789 transitions.
[2021-06-12 21:20:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:20:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:20:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:20:58,114 INFO L225 Difference]: With dead ends: 15771
[2021-06-12 21:20:58,114 INFO L226 Difference]: Without dead ends: 15691
[2021-06-12 21:20:58,114 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 2332.2ms TimeCoverageRelationStatistics Valid=899, Invalid=4801, Unknown=0, NotChecked=0, Total=5700
[2021-06-12 21:20:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15691 states.
[2021-06-12 21:20:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15691 to 9020.
[2021-06-12 21:20:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9020 states, 9019 states have (on average 3.351036700299368) internal successors, (30223), 9019 states have internal predecessors, (30223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 30223 transitions.
[2021-06-12 21:20:58,312 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 30223 transitions. Word has length 34
[2021-06-12 21:20:58,312 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:20:58,312 INFO L482 AbstractCegarLoop]: Abstraction has 9020 states and 30223 transitions.
[2021-06-12 21:20:58,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:20:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 30223 transitions.
[2021-06-12 21:20:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:20:58,323 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:20:58,323 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:20:58,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:58,537 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:20:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:20:58,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1758131039, now seen corresponding path program 45 times
[2021-06-12 21:20:58,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:20:58,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392749483]
[2021-06-12 21:20:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:20:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:20:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:58,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:20:58,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392749483]
[2021-06-12 21:20:58,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392749483] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:58,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842890415]
[2021-06-12 21:20:58,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:20:58,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:20:58,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:20:58,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:20:58,771 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:20:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:20:59,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842890415] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:20:59,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:20:59,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:20:59,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521670979]
[2021-06-12 21:20:59,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:20:59,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:20:59,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:20:59,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:20:59,225 INFO L87 Difference]: Start difference. First operand 9020 states and 30223 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:01,088 INFO L93 Difference]: Finished difference Result 15861 states and 52080 transitions.
[2021-06-12 21:21:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:21:01,089 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:01,117 INFO L225 Difference]: With dead ends: 15861
[2021-06-12 21:21:01,117 INFO L226 Difference]: Without dead ends: 15781
[2021-06-12 21:21:01,117 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1513.8ms TimeCoverageRelationStatistics Valid=665, Invalid=2757, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:21:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15781 states.
[2021-06-12 21:21:01,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15781 to 9108.
[2021-06-12 21:21:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9108 states, 9107 states have (on average 3.3542330075765894) internal successors, (30547), 9107 states have internal predecessors, (30547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9108 states to 9108 states and 30547 transitions.
[2021-06-12 21:21:01,321 INFO L78 Accepts]: Start accepts. Automaton has 9108 states and 30547 transitions. Word has length 34
[2021-06-12 21:21:01,321 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:01,321 INFO L482 AbstractCegarLoop]: Abstraction has 9108 states and 30547 transitions.
[2021-06-12 21:21:01,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9108 states and 30547 transitions.
[2021-06-12 21:21:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:01,332 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:01,332 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:01,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable379
[2021-06-12 21:21:01,533 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash 934876179, now seen corresponding path program 46 times
[2021-06-12 21:21:01,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:01,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790600903]
[2021-06-12 21:21:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:01,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:01,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790600903]
[2021-06-12 21:21:01,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790600903] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:01,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899343640]
[2021-06-12 21:21:01,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:01,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:21:01,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:01,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:21:01,762 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:02,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899343640] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:02,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:02,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:21:02,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542803388]
[2021-06-12 21:21:02,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:21:02,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:21:02,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:21:02,357 INFO L87 Difference]: Start difference. First operand 9108 states and 30547 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:03,570 INFO L93 Difference]: Finished difference Result 14291 states and 46571 transitions.
[2021-06-12 21:21:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-06-12 21:21:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:03,592 INFO L225 Difference]: With dead ends: 14291
[2021-06-12 21:21:03,592 INFO L226 Difference]: Without dead ends: 14230
[2021-06-12 21:21:03,592 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1204.8ms TimeCoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:21:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14230 states.
[2021-06-12 21:21:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14230 to 9186.
[2021-06-12 21:21:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9185 states have (on average 3.3555797495917257) internal successors, (30821), 9185 states have internal predecessors, (30821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 30821 transitions.
[2021-06-12 21:21:03,769 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 30821 transitions. Word has length 34
[2021-06-12 21:21:03,769 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:03,769 INFO L482 AbstractCegarLoop]: Abstraction has 9186 states and 30821 transitions.
[2021-06-12 21:21:03,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 30821 transitions.
[2021-06-12 21:21:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:03,779 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:03,779 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:03,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:03,980 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:03,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:03,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1092369645, now seen corresponding path program 47 times
[2021-06-12 21:21:03,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:03,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506222533]
[2021-06-12 21:21:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:04,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:04,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506222533]
[2021-06-12 21:21:04,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506222533] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:04,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303688675]
[2021-06-12 21:21:04,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:04,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:21:04,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:04,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:21:04,221 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:04,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303688675] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:04,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:04,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:21:04,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634490835]
[2021-06-12 21:21:04,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:21:04,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:04,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:21:04,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:21:04,760 INFO L87 Difference]: Start difference. First operand 9186 states and 30821 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:07,218 INFO L93 Difference]: Finished difference Result 19194 states and 63283 transitions.
[2021-06-12 21:21:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2021-06-12 21:21:07,218 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:07,249 INFO L225 Difference]: With dead ends: 19194
[2021-06-12 21:21:07,249 INFO L226 Difference]: Without dead ends: 19114
[2021-06-12 21:21:07,250 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1983.7ms TimeCoverageRelationStatistics Valid=915, Invalid=4635, Unknown=0, NotChecked=0, Total=5550
[2021-06-12 21:21:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19114 states.
[2021-06-12 21:21:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19114 to 9171.
[2021-06-12 21:21:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9171 states, 9170 states have (on average 3.353435114503817) internal successors, (30751), 9170 states have internal predecessors, (30751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9171 states to 9171 states and 30751 transitions.
[2021-06-12 21:21:07,464 INFO L78 Accepts]: Start accepts. Automaton has 9171 states and 30751 transitions. Word has length 34
[2021-06-12 21:21:07,465 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:07,465 INFO L482 AbstractCegarLoop]: Abstraction has 9171 states and 30751 transitions.
[2021-06-12 21:21:07,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 9171 states and 30751 transitions.
[2021-06-12 21:21:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:07,475 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:07,475 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:07,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable401
[2021-06-12 21:21:07,676 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:07,676 INFO L82 PathProgramCache]: Analyzing trace with hash -367332205, now seen corresponding path program 48 times
[2021-06-12 21:21:07,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:07,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152761827]
[2021-06-12 21:21:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:07,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:07,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152761827]
[2021-06-12 21:21:07,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152761827] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:07,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791028995]
[2021-06-12 21:21:07,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:07,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:21:07,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:07,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:07,909 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:08,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791028995] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:08,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:08,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:21:08,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410355922]
[2021-06-12 21:21:08,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:21:08,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:21:08,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:21:08,411 INFO L87 Difference]: Start difference. First operand 9171 states and 30751 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:09,620 INFO L93 Difference]: Finished difference Result 12967 states and 43188 transitions.
[2021-06-12 21:21:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-06-12 21:21:09,621 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:09,642 INFO L225 Difference]: With dead ends: 12967
[2021-06-12 21:21:09,642 INFO L226 Difference]: Without dead ends: 12887
[2021-06-12 21:21:09,642 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1123.7ms TimeCoverageRelationStatistics Valid=468, Invalid=1982, Unknown=0, NotChecked=0, Total=2450
[2021-06-12 21:21:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states.
[2021-06-12 21:21:09,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 9179.
[2021-06-12 21:21:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9179 states, 9178 states have (on average 3.3531270429287425) internal successors, (30775), 9178 states have internal predecessors, (30775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9179 states to 9179 states and 30775 transitions.
[2021-06-12 21:21:09,806 INFO L78 Accepts]: Start accepts. Automaton has 9179 states and 30775 transitions. Word has length 34
[2021-06-12 21:21:09,806 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:09,807 INFO L482 AbstractCegarLoop]: Abstraction has 9179 states and 30775 transitions.
[2021-06-12 21:21:09,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9179 states and 30775 transitions.
[2021-06-12 21:21:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:09,817 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:09,817 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:10,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:10,017 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash -705669741, now seen corresponding path program 49 times
[2021-06-12 21:21:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:10,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637840272]
[2021-06-12 21:21:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:10,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:10,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637840272]
[2021-06-12 21:21:10,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637840272] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:10,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375339227]
[2021-06-12 21:21:10,214 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:10,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:10,237 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:10,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375339227] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:10,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:10,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:21:10,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608724822]
[2021-06-12 21:21:10,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:21:10,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:10,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:21:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:21:10,741 INFO L87 Difference]: Start difference. First operand 9179 states and 30775 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:12,051 INFO L93 Difference]: Finished difference Result 12929 states and 43085 transitions.
[2021-06-12 21:21:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-06-12 21:21:12,052 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:12,073 INFO L225 Difference]: With dead ends: 12929
[2021-06-12 21:21:12,074 INFO L226 Difference]: Without dead ends: 12849
[2021-06-12 21:21:12,074 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1121.2ms TimeCoverageRelationStatistics Valid=473, Invalid=2077, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:21:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12849 states.
[2021-06-12 21:21:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12849 to 9181.
[2021-06-12 21:21:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9181 states, 9180 states have (on average 3.353050108932462) internal successors, (30781), 9180 states have internal predecessors, (30781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9181 states to 9181 states and 30781 transitions.
[2021-06-12 21:21:12,241 INFO L78 Accepts]: Start accepts. Automaton has 9181 states and 30781 transitions. Word has length 34
[2021-06-12 21:21:12,241 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:12,241 INFO L482 AbstractCegarLoop]: Abstraction has 9181 states and 30781 transitions.
[2021-06-12 21:21:12,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9181 states and 30781 transitions.
[2021-06-12 21:21:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:12,252 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:12,252 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:12,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable423
[2021-06-12 21:21:12,453 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 569472659, now seen corresponding path program 50 times
[2021-06-12 21:21:12,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:12,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049081463]
[2021-06-12 21:21:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:12,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:12,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049081463]
[2021-06-12 21:21:12,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049081463] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:12,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550148591]
[2021-06-12 21:21:12,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:12,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:21:12,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:12,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:12,662 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:13,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550148591] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:13,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:13,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:21:13,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911420315]
[2021-06-12 21:21:13,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:21:13,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:13,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:21:13,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:21:13,142 INFO L87 Difference]: Start difference. First operand 9181 states and 30781 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:14,380 INFO L93 Difference]: Finished difference Result 12817 states and 42681 transitions.
[2021-06-12 21:21:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-06-12 21:21:14,381 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:14,400 INFO L225 Difference]: With dead ends: 12817
[2021-06-12 21:21:14,401 INFO L226 Difference]: Without dead ends: 12737
[2021-06-12 21:21:14,401 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1095.8ms TimeCoverageRelationStatistics Valid=494, Invalid=2056, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:21:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states.
[2021-06-12 21:21:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 9109.
[2021-06-12 21:21:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9109 states, 9108 states have (on average 3.352986385595081) internal successors, (30539), 9108 states have internal predecessors, (30539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9109 states to 9109 states and 30539 transitions.
[2021-06-12 21:21:14,554 INFO L78 Accepts]: Start accepts. Automaton has 9109 states and 30539 transitions. Word has length 34
[2021-06-12 21:21:14,554 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:14,554 INFO L482 AbstractCegarLoop]: Abstraction has 9109 states and 30539 transitions.
[2021-06-12 21:21:14,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9109 states and 30539 transitions.
[2021-06-12 21:21:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:14,564 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:14,564 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:14,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable434
[2021-06-12 21:21:14,765 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1744662307, now seen corresponding path program 51 times
[2021-06-12 21:21:14,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:14,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535146432]
[2021-06-12 21:21:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:14,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:14,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535146432]
[2021-06-12 21:21:14,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535146432] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:14,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855181888]
[2021-06-12 21:21:14,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:14,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:21:14,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:14,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:21:14,998 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:15,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855181888] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:15,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:15,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:21:15,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912797629]
[2021-06-12 21:21:15,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:21:15,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:21:15,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:21:15,489 INFO L87 Difference]: Start difference. First operand 9109 states and 30539 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:17,371 INFO L93 Difference]: Finished difference Result 16652 states and 54193 transitions.
[2021-06-12 21:21:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:21:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:17,399 INFO L225 Difference]: With dead ends: 16652
[2021-06-12 21:21:17,399 INFO L226 Difference]: Without dead ends: 16578
[2021-06-12 21:21:17,399 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1436.4ms TimeCoverageRelationStatistics Valid=527, Invalid=3013, Unknown=0, NotChecked=0, Total=3540
[2021-06-12 21:21:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16578 states.
[2021-06-12 21:21:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16578 to 9297.
[2021-06-12 21:21:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9297 states, 9296 states have (on average 3.3570352839931155) internal successors, (31207), 9296 states have internal predecessors, (31207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9297 states to 9297 states and 31207 transitions.
[2021-06-12 21:21:17,609 INFO L78 Accepts]: Start accepts. Automaton has 9297 states and 31207 transitions. Word has length 34
[2021-06-12 21:21:17,609 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:17,609 INFO L482 AbstractCegarLoop]: Abstraction has 9297 states and 31207 transitions.
[2021-06-12 21:21:17,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 9297 states and 31207 transitions.
[2021-06-12 21:21:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:17,619 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:17,619 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:17,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:17,820 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash 512563959, now seen corresponding path program 52 times
[2021-06-12 21:21:17,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:17,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055454607]
[2021-06-12 21:21:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:18,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:18,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055454607]
[2021-06-12 21:21:18,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055454607] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:18,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747490094]
[2021-06-12 21:21:18,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:18,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:21:18,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:18,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:18,033 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:18,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747490094] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:18,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:18,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:21:18,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425697620]
[2021-06-12 21:21:18,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:21:18,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:21:18,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:21:18,554 INFO L87 Difference]: Start difference. First operand 9297 states and 31207 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:20,397 INFO L93 Difference]: Finished difference Result 16129 states and 53347 transitions.
[2021-06-12 21:21:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-06-12 21:21:20,398 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:20,426 INFO L225 Difference]: With dead ends: 16129
[2021-06-12 21:21:20,426 INFO L226 Difference]: Without dead ends: 16049
[2021-06-12 21:21:20,426 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1334.6ms TimeCoverageRelationStatistics Valid=561, Invalid=2745, Unknown=0, NotChecked=0, Total=3306
[2021-06-12 21:21:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states.
[2021-06-12 21:21:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 9301.
[2021-06-12 21:21:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9301 states, 9300 states have (on average 3.3568817204301076) internal successors, (31219), 9300 states have internal predecessors, (31219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 31219 transitions.
[2021-06-12 21:21:20,615 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 31219 transitions. Word has length 34
[2021-06-12 21:21:20,615 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:20,615 INFO L482 AbstractCegarLoop]: Abstraction has 9301 states and 31219 transitions.
[2021-06-12 21:21:20,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 31219 transitions.
[2021-06-12 21:21:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:20,667 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:20,667 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:20,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable456
[2021-06-12 21:21:20,867 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:20,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:20,867 INFO L82 PathProgramCache]: Analyzing trace with hash 442453923, now seen corresponding path program 53 times
[2021-06-12 21:21:20,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:20,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402034279]
[2021-06-12 21:21:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:21,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:21,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402034279]
[2021-06-12 21:21:21,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402034279] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:21,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952167647]
[2021-06-12 21:21:21,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:21,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:21:21,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:21,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:21,083 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:21,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952167647] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:21,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:21,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:21:21,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117008121]
[2021-06-12 21:21:21,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:21:21,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:21:21,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:21:21,577 INFO L87 Difference]: Start difference. First operand 9301 states and 31219 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:22,923 INFO L93 Difference]: Finished difference Result 15319 states and 50920 transitions.
[2021-06-12 21:21:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:21:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:22,949 INFO L225 Difference]: With dead ends: 15319
[2021-06-12 21:21:22,949 INFO L226 Difference]: Without dead ends: 15239
[2021-06-12 21:21:22,950 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 1203.5ms TimeCoverageRelationStatistics Valid=524, Invalid=2446, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:21:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15239 states.
[2021-06-12 21:21:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15239 to 9301.
[2021-06-12 21:21:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9301 states, 9300 states have (on average 3.3568817204301076) internal successors, (31219), 9300 states have internal predecessors, (31219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 31219 transitions.
[2021-06-12 21:21:23,143 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 31219 transitions. Word has length 34
[2021-06-12 21:21:23,143 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:23,143 INFO L482 AbstractCegarLoop]: Abstraction has 9301 states and 31219 transitions.
[2021-06-12 21:21:23,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 31219 transitions.
[2021-06-12 21:21:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:23,154 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:23,154 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:23,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:23,354 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:23,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1923326303, now seen corresponding path program 54 times
[2021-06-12 21:21:23,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:23,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840500814]
[2021-06-12 21:21:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:23,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:23,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840500814]
[2021-06-12 21:21:23,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840500814] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:23,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233989485]
[2021-06-12 21:21:23,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:23,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:21:23,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:23,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-06-12 21:21:23,611 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:24,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233989485] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:24,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:24,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32
[2021-06-12 21:21:24,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835890708]
[2021-06-12 21:21:24,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:21:24,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:21:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:21:24,090 INFO L87 Difference]: Start difference. First operand 9301 states and 31219 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:25,837 INFO L93 Difference]: Finished difference Result 19306 states and 63066 transitions.
[2021-06-12 21:21:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-06-12 21:21:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:25,867 INFO L225 Difference]: With dead ends: 19306
[2021-06-12 21:21:25,867 INFO L226 Difference]: Without dead ends: 19208
[2021-06-12 21:21:25,867 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1524.4ms TimeCoverageRelationStatistics Valid=713, Invalid=3069, Unknown=0, NotChecked=0, Total=3782
[2021-06-12 21:21:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19208 states.
[2021-06-12 21:21:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19208 to 9199.
[2021-06-12 21:21:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9199 states, 9198 states have (on average 3.352576647097195) internal successors, (30837), 9198 states have internal predecessors, (30837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9199 states to 9199 states and 30837 transitions.
[2021-06-12 21:21:26,079 INFO L78 Accepts]: Start accepts. Automaton has 9199 states and 30837 transitions. Word has length 34
[2021-06-12 21:21:26,079 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:26,079 INFO L482 AbstractCegarLoop]: Abstraction has 9199 states and 30837 transitions.
[2021-06-12 21:21:26,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9199 states and 30837 transitions.
[2021-06-12 21:21:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:26,090 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:26,090 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:26,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable478
[2021-06-12 21:21:26,290 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:26,291 INFO L82 PathProgramCache]: Analyzing trace with hash 104116387, now seen corresponding path program 55 times
[2021-06-12 21:21:26,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:26,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841738181]
[2021-06-12 21:21:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:26,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:26,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841738181]
[2021-06-12 21:21:26,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841738181] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:26,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107649021]
[2021-06-12 21:21:26,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:26,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:26,516 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:27,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107649021] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:27,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:27,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32
[2021-06-12 21:21:27,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324749312]
[2021-06-12 21:21:27,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states
[2021-06-12 21:21:27,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:27,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2021-06-12 21:21:27,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056
[2021-06-12 21:21:27,006 INFO L87 Difference]: Start difference. First operand 9199 states and 30837 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:28,520 INFO L93 Difference]: Finished difference Result 14838 states and 49288 transitions.
[2021-06-12 21:21:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:21:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:28,544 INFO L225 Difference]: With dead ends: 14838
[2021-06-12 21:21:28,544 INFO L226 Difference]: Without dead ends: 14758
[2021-06-12 21:21:28,545 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1249.2ms TimeCoverageRelationStatistics Valid=542, Invalid=2538, Unknown=0, NotChecked=0, Total=3080
[2021-06-12 21:21:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14758 states.
[2021-06-12 21:21:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14758 to 9199.
[2021-06-12 21:21:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9199 states, 9198 states have (on average 3.352576647097195) internal successors, (30837), 9198 states have internal predecessors, (30837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9199 states to 9199 states and 30837 transitions.
[2021-06-12 21:21:28,712 INFO L78 Accepts]: Start accepts. Automaton has 9199 states and 30837 transitions. Word has length 34
[2021-06-12 21:21:28,712 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:28,712 INFO L482 AbstractCegarLoop]: Abstraction has 9199 states and 30837 transitions.
[2021-06-12 21:21:28,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9199 states and 30837 transitions.
[2021-06-12 21:21:28,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-12 21:21:28,722 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:28,722 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:28,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable489
[2021-06-12 21:21:28,925 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash 539636319, now seen corresponding path program 56 times
[2021-06-12 21:21:28,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:28,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530961387]
[2021-06-12 21:21:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:29,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:29,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530961387]
[2021-06-12 21:21:29,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530961387] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:29,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801529378]
[2021-06-12 21:21:29,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:29,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:21:29,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:29,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:21:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:29,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801529378] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:29,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:29,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-06-12 21:21:29,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174315928]
[2021-06-12 21:21:29,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states
[2021-06-12 21:21:29,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:29,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-06-12 21:21:29,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992
[2021-06-12 21:21:29,623 INFO L87 Difference]: Start difference. First operand 9199 states and 30837 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:31,376 INFO L93 Difference]: Finished difference Result 19992 states and 66552 transitions.
[2021-06-12 21:21:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2021-06-12 21:21:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-12 21:21:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:31,408 INFO L225 Difference]: With dead ends: 19992
[2021-06-12 21:21:31,408 INFO L226 Difference]: Without dead ends: 19912
[2021-06-12 21:21:31,409 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1432.0ms TimeCoverageRelationStatistics Valid=625, Invalid=3035, Unknown=0, NotChecked=0, Total=3660
[2021-06-12 21:21:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19912 states.
[2021-06-12 21:21:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19912 to 9055.
[2021-06-12 21:21:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9055 states, 9054 states have (on average 3.3537662911420365) internal successors, (30365), 9054 states have internal predecessors, (30365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9055 states to 9055 states and 30365 transitions.
[2021-06-12 21:21:31,629 INFO L78 Accepts]: Start accepts. Automaton has 9055 states and 30365 transitions. Word has length 34
[2021-06-12 21:21:31,629 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:31,629 INFO L482 AbstractCegarLoop]: Abstraction has 9055 states and 30365 transitions.
[2021-06-12 21:21:31,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9055 states and 30365 transitions.
[2021-06-12 21:21:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:31,640 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:31,640 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:31,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:31,840 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash 720113029, now seen corresponding path program 57 times
[2021-06-12 21:21:31,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:31,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499457600]
[2021-06-12 21:21:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:21:32,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:32,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499457600]
[2021-06-12 21:21:32,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499457600] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:32,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274840627]
[2021-06-12 21:21:32,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:32,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:21:32,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:32,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:21:32,240 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:32,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274840627] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:32,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:32,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:21:32,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430759143]
[2021-06-12 21:21:32,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:21:32,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:21:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:21:32,941 INFO L87 Difference]: Start difference. First operand 9055 states and 30365 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:35,216 INFO L93 Difference]: Finished difference Result 12463 states and 40678 transitions.
[2021-06-12 21:21:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-06-12 21:21:35,216 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:35,234 INFO L225 Difference]: With dead ends: 12463
[2021-06-12 21:21:35,234 INFO L226 Difference]: Without dead ends: 12343
[2021-06-12 21:21:35,234 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 1892.4ms TimeCoverageRelationStatistics Valid=578, Invalid=3082, Unknown=0, NotChecked=0, Total=3660
[2021-06-12 21:21:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states.
[2021-06-12 21:21:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 9161.
[2021-06-12 21:21:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9161 states, 9160 states have (on average 3.3498908296943233) internal successors, (30685), 9160 states have internal predecessors, (30685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9161 states to 9161 states and 30685 transitions.
[2021-06-12 21:21:35,390 INFO L78 Accepts]: Start accepts. Automaton has 9161 states and 30685 transitions. Word has length 36
[2021-06-12 21:21:35,390 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:35,390 INFO L482 AbstractCegarLoop]: Abstraction has 9161 states and 30685 transitions.
[2021-06-12 21:21:35,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9161 states and 30685 transitions.
[2021-06-12 21:21:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:35,400 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:35,401 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:35,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable511
[2021-06-12 21:21:35,609 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash -117814139, now seen corresponding path program 58 times
[2021-06-12 21:21:35,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:35,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790838788]
[2021-06-12 21:21:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:21:35,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:35,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790838788]
[2021-06-12 21:21:35,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790838788] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:35,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186441704]
[2021-06-12 21:21:35,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:35,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:21:35,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:35,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:21:35,950 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:36,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186441704] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:36,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:36,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:21:36,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424589323]
[2021-06-12 21:21:36,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:21:36,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:36,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:21:36,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1147, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:21:36,702 INFO L87 Difference]: Start difference. First operand 9161 states and 30685 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:38,194 INFO L93 Difference]: Finished difference Result 9978 states and 32867 transitions.
[2021-06-12 21:21:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-06-12 21:21:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:38,209 INFO L225 Difference]: With dead ends: 9978
[2021-06-12 21:21:38,209 INFO L226 Difference]: Without dead ends: 9870
[2021-06-12 21:21:38,209 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1728.1ms TimeCoverageRelationStatistics Valid=600, Invalid=2706, Unknown=0, NotChecked=0, Total=3306
[2021-06-12 21:21:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9870 states.
[2021-06-12 21:21:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9870 to 9245.
[2021-06-12 21:21:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9245 states, 9244 states have (on average 3.3443314582431847) internal successors, (30915), 9244 states have internal predecessors, (30915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9245 states to 9245 states and 30915 transitions.
[2021-06-12 21:21:38,342 INFO L78 Accepts]: Start accepts. Automaton has 9245 states and 30915 transitions. Word has length 36
[2021-06-12 21:21:38,343 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:38,343 INFO L482 AbstractCegarLoop]: Abstraction has 9245 states and 30915 transitions.
[2021-06-12 21:21:38,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 9245 states and 30915 transitions.
[2021-06-12 21:21:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:38,353 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:38,353 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:38,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:38,554 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:38,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1178415995, now seen corresponding path program 59 times
[2021-06-12 21:21:38,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:38,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049611646]
[2021-06-12 21:21:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:21:38,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:38,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049611646]
[2021-06-12 21:21:38,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049611646] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:38,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432536644]
[2021-06-12 21:21:38,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:38,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:21:38,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:38,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-06-12 21:21:38,872 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:39,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432536644] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:39,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:39,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35
[2021-06-12 21:21:39,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227006972]
[2021-06-12 21:21:39,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:21:39,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:39,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:21:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:21:39,480 INFO L87 Difference]: Start difference. First operand 9245 states and 30915 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:40,737 INFO L93 Difference]: Finished difference Result 11017 states and 36070 transitions.
[2021-06-12 21:21:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-12 21:21:40,738 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:40,754 INFO L225 Difference]: With dead ends: 11017
[2021-06-12 21:21:40,754 INFO L226 Difference]: Without dead ends: 10963
[2021-06-12 21:21:40,754 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1495.3ms TimeCoverageRelationStatistics Valid=519, Invalid=2451, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:21:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10963 states.
[2021-06-12 21:21:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10963 to 9313.
[2021-06-12 21:21:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9313 states, 9312 states have (on average 3.3385953608247423) internal successors, (31089), 9312 states have internal predecessors, (31089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 31089 transitions.
[2021-06-12 21:21:40,898 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 31089 transitions. Word has length 36
[2021-06-12 21:21:40,898 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:40,899 INFO L482 AbstractCegarLoop]: Abstraction has 9313 states and 31089 transitions.
[2021-06-12 21:21:40,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 31089 transitions.
[2021-06-12 21:21:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:40,909 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:40,909 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:41,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable533
[2021-06-12 21:21:41,124 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2016343163, now seen corresponding path program 60 times
[2021-06-12 21:21:41,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:41,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656107218]
[2021-06-12 21:21:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:21:41,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:41,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656107218]
[2021-06-12 21:21:41,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656107218] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:41,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772138873]
[2021-06-12 21:21:41,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:41,446 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:21:41,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:41,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:21:41,447 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:42,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772138873] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:42,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:42,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:21:42,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859954094]
[2021-06-12 21:21:42,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:21:42,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:21:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:21:42,019 INFO L87 Difference]: Start difference. First operand 9313 states and 31089 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:44,266 INFO L93 Difference]: Finished difference Result 10574 states and 34626 transitions.
[2021-06-12 21:21:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2021-06-12 21:21:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:44,281 INFO L225 Difference]: With dead ends: 10574
[2021-06-12 21:21:44,281 INFO L226 Difference]: Without dead ends: 10293
[2021-06-12 21:21:44,282 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1797.8ms TimeCoverageRelationStatistics Valid=556, Invalid=3604, Unknown=0, NotChecked=0, Total=4160
[2021-06-12 21:21:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10293 states.
[2021-06-12 21:21:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10293 to 9327.
[2021-06-12 21:21:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9327 states, 9326 states have (on average 3.3374437057688184) internal successors, (31125), 9326 states have internal predecessors, (31125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 31125 transitions.
[2021-06-12 21:21:44,442 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 31125 transitions. Word has length 36
[2021-06-12 21:21:44,442 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:44,442 INFO L482 AbstractCegarLoop]: Abstraction has 9327 states and 31125 transitions.
[2021-06-12 21:21:44,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 31125 transitions.
[2021-06-12 21:21:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:44,453 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:44,453 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:44,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:44,653 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:44,654 INFO L82 PathProgramCache]: Analyzing trace with hash -455210879, now seen corresponding path program 61 times
[2021-06-12 21:21:44,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:44,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274189017]
[2021-06-12 21:21:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:44,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:44,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274189017]
[2021-06-12 21:21:44,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274189017] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:44,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056256511]
[2021-06-12 21:21:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:44,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:21:44,984 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:45,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056256511] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:45,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:45,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:21:45,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64518815]
[2021-06-12 21:21:45,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:21:45,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:45,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:21:45,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1172, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:21:45,775 INFO L87 Difference]: Start difference. First operand 9327 states and 31125 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:47,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:47,583 INFO L93 Difference]: Finished difference Result 10820 states and 35312 transitions.
[2021-06-12 21:21:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2021-06-12 21:21:47,584 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:47,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:47,599 INFO L225 Difference]: With dead ends: 10820
[2021-06-12 21:21:47,599 INFO L226 Difference]: Without dead ends: 10712
[2021-06-12 21:21:47,600 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 1942.2ms TimeCoverageRelationStatistics Valid=755, Invalid=3535, Unknown=0, NotChecked=0, Total=4290
[2021-06-12 21:21:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10712 states.
[2021-06-12 21:21:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10712 to 9391.
[2021-06-12 21:21:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9391 states, 9390 states have (on average 3.3338658146964857) internal successors, (31305), 9390 states have internal predecessors, (31305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9391 states to 9391 states and 31305 transitions.
[2021-06-12 21:21:47,745 INFO L78 Accepts]: Start accepts. Automaton has 9391 states and 31305 transitions. Word has length 36
[2021-06-12 21:21:47,745 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:47,745 INFO L482 AbstractCegarLoop]: Abstraction has 9391 states and 31305 transitions.
[2021-06-12 21:21:47,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9391 states and 31305 transitions.
[2021-06-12 21:21:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:47,756 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:47,756 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:47,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable541
[2021-06-12 21:21:47,957 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1069723269, now seen corresponding path program 62 times
[2021-06-12 21:21:47,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:47,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740545930]
[2021-06-12 21:21:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:48,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:48,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740545930]
[2021-06-12 21:21:48,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740545930] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:48,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633284359]
[2021-06-12 21:21:48,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:48,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:21:48,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:48,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:21:48,287 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:49,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633284359] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:49,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:49,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35
[2021-06-12 21:21:49,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260605542]
[2021-06-12 21:21:49,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:21:49,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:49,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:21:49,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:21:49,026 INFO L87 Difference]: Start difference. First operand 9391 states and 31305 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:53,112 INFO L93 Difference]: Finished difference Result 15459 states and 49301 transitions.
[2021-06-12 21:21:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2021-06-12 21:21:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:53,134 INFO L225 Difference]: With dead ends: 15459
[2021-06-12 21:21:53,134 INFO L226 Difference]: Without dead ends: 15318
[2021-06-12 21:21:53,135 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2474 ImplicationChecksByTransitivity, 3268.5ms TimeCoverageRelationStatistics Valid=1225, Invalid=6607, Unknown=0, NotChecked=0, Total=7832
[2021-06-12 21:21:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15318 states.
[2021-06-12 21:21:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15318 to 9405.
[2021-06-12 21:21:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9405 states, 9404 states have (on average 3.336771586558911) internal successors, (31379), 9404 states have internal predecessors, (31379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 31379 transitions.
[2021-06-12 21:21:53,302 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 31379 transitions. Word has length 36
[2021-06-12 21:21:53,302 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:53,302 INFO L482 AbstractCegarLoop]: Abstraction has 9405 states and 31379 transitions.
[2021-06-12 21:21:53,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 31379 transitions.
[2021-06-12 21:21:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:53,313 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:53,313 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:53,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable552
[2021-06-12 21:21:53,521 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:53,521 INFO L82 PathProgramCache]: Analyzing trace with hash -819071103, now seen corresponding path program 63 times
[2021-06-12 21:21:53,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:53,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625816640]
[2021-06-12 21:21:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:53,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:53,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625816640]
[2021-06-12 21:21:53,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625816640] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:53,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952100916]
[2021-06-12 21:21:53,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:53,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:21:53,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:53,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:21:53,853 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:54,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952100916] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:54,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:54,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:21:54,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501540153]
[2021-06-12 21:21:54,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:21:54,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:54,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:21:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:21:54,515 INFO L87 Difference]: Start difference. First operand 9405 states and 31379 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:21:57,777 INFO L93 Difference]: Finished difference Result 15173 states and 48503 transitions.
[2021-06-12 21:21:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:21:57,778 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:21:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:21:57,801 INFO L225 Difference]: With dead ends: 15173
[2021-06-12 21:21:57,801 INFO L226 Difference]: Without dead ends: 15059
[2021-06-12 21:21:57,801 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 2522.5ms TimeCoverageRelationStatistics Valid=822, Invalid=5184, Unknown=0, NotChecked=0, Total=6006
[2021-06-12 21:21:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15059 states.
[2021-06-12 21:21:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15059 to 9471.
[2021-06-12 21:21:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9471 states, 9470 states have (on average 3.3367476240760294) internal successors, (31599), 9470 states have internal predecessors, (31599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9471 states to 9471 states and 31599 transitions.
[2021-06-12 21:21:57,986 INFO L78 Accepts]: Start accepts. Automaton has 9471 states and 31599 transitions. Word has length 36
[2021-06-12 21:21:57,986 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:21:57,986 INFO L482 AbstractCegarLoop]: Abstraction has 9471 states and 31599 transitions.
[2021-06-12 21:21:57,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:21:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 9471 states and 31599 transitions.
[2021-06-12 21:21:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:21:57,997 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:21:57,997 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:21:58,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:58,202 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:21:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:21:58,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1653259387, now seen corresponding path program 64 times
[2021-06-12 21:21:58,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:21:58,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417208335]
[2021-06-12 21:21:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:21:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:21:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:58,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:21:58,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417208335]
[2021-06-12 21:21:58,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417208335] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:58,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337909700]
[2021-06-12 21:21:58,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:21:58,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:21:58,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:21:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:21:58,475 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:21:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:21:59,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337909700] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:21:59,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:21:59,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:21:59,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804335534]
[2021-06-12 21:21:59,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:21:59,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:21:59,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:21:59,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:21:59,086 INFO L87 Difference]: Start difference. First operand 9471 states and 31599 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:02,363 INFO L93 Difference]: Finished difference Result 16347 states and 51964 transitions.
[2021-06-12 21:22:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2021-06-12 21:22:02,363 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:02,385 INFO L225 Difference]: With dead ends: 16347
[2021-06-12 21:22:02,385 INFO L226 Difference]: Without dead ends: 16075
[2021-06-12 21:22:02,386 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 2699.9ms TimeCoverageRelationStatistics Valid=1131, Invalid=6879, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:22:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16075 states.
[2021-06-12 21:22:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16075 to 9481.
[2021-06-12 21:22:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9481 states, 9480 states have (on average 3.334704641350211) internal successors, (31613), 9480 states have internal predecessors, (31613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9481 states to 9481 states and 31613 transitions.
[2021-06-12 21:22:02,557 INFO L78 Accepts]: Start accepts. Automaton has 9481 states and 31613 transitions. Word has length 36
[2021-06-12 21:22:02,557 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:02,557 INFO L482 AbstractCegarLoop]: Abstraction has 9481 states and 31613 transitions.
[2021-06-12 21:22:02,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 9481 states and 31613 transitions.
[2021-06-12 21:22:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:02,567 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:02,568 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:02,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:02,775 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:02,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1349684095, now seen corresponding path program 65 times
[2021-06-12 21:22:02,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:02,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730356865]
[2021-06-12 21:22:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:03,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:03,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730356865]
[2021-06-12 21:22:03,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730356865] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:03,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518440890]
[2021-06-12 21:22:03,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:03,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:22:03,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:03,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:22:03,060 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:03,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518440890] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:03,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:03,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:22:03,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018717672]
[2021-06-12 21:22:03,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:22:03,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:03,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:22:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:22:03,668 INFO L87 Difference]: Start difference. First operand 9481 states and 31613 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:07,781 INFO L93 Difference]: Finished difference Result 17046 states and 54034 transitions.
[2021-06-12 21:22:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2021-06-12 21:22:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:07,805 INFO L225 Difference]: With dead ends: 17046
[2021-06-12 21:22:07,805 INFO L226 Difference]: Without dead ends: 16798
[2021-06-12 21:22:07,806 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3251 ImplicationChecksByTransitivity, 3195.9ms TimeCoverageRelationStatistics Valid=1396, Invalid=8704, Unknown=0, NotChecked=0, Total=10100
[2021-06-12 21:22:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16798 states.
[2021-06-12 21:22:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16798 to 9516.
[2021-06-12 21:22:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9516 states, 9515 states have (on average 3.333893851812927) internal successors, (31722), 9515 states have internal predecessors, (31722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9516 states to 9516 states and 31722 transitions.
[2021-06-12 21:22:07,987 INFO L78 Accepts]: Start accepts. Automaton has 9516 states and 31722 transitions. Word has length 36
[2021-06-12 21:22:07,987 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:07,987 INFO L482 AbstractCegarLoop]: Abstraction has 9516 states and 31722 transitions.
[2021-06-12 21:22:07,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9516 states and 31722 transitions.
[2021-06-12 21:22:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:07,998 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:07,998 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:08,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable575
[2021-06-12 21:22:08,199 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash 834262405, now seen corresponding path program 66 times
[2021-06-12 21:22:08,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:08,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889169464]
[2021-06-12 21:22:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:08,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:08,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889169464]
[2021-06-12 21:22:08,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889169464] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:08,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856509990]
[2021-06-12 21:22:08,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:08,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:22:08,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:08,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:22:08,494 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:09,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856509990] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:09,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:09,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:22:09,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246543833]
[2021-06-12 21:22:09,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:22:09,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:22:09,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:22:09,036 INFO L87 Difference]: Start difference. First operand 9516 states and 31722 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:14,900 INFO L93 Difference]: Finished difference Result 18367 states and 57873 transitions.
[2021-06-12 21:22:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states.
[2021-06-12 21:22:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:14,925 INFO L225 Difference]: With dead ends: 18367
[2021-06-12 21:22:14,925 INFO L226 Difference]: Without dead ends: 18184
[2021-06-12 21:22:14,926 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4586 ImplicationChecksByTransitivity, 4401.1ms TimeCoverageRelationStatistics Valid=1975, Invalid=11597, Unknown=0, NotChecked=0, Total=13572
[2021-06-12 21:22:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18184 states.
[2021-06-12 21:22:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18184 to 9510.
[2021-06-12 21:22:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9510 states, 9509 states have (on average 3.3346303501945527) internal successors, (31709), 9509 states have internal predecessors, (31709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 31709 transitions.
[2021-06-12 21:22:15,146 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 31709 transitions. Word has length 36
[2021-06-12 21:22:15,146 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:15,146 INFO L482 AbstractCegarLoop]: Abstraction has 9510 states and 31709 transitions.
[2021-06-12 21:22:15,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 31709 transitions.
[2021-06-12 21:22:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:15,157 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:15,157 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:15,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable579
[2021-06-12 21:22:15,358 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:15,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1725411973, now seen corresponding path program 67 times
[2021-06-12 21:22:15,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:15,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39523651]
[2021-06-12 21:22:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:15,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:15,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39523651]
[2021-06-12 21:22:15,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39523651] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:15,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122690346]
[2021-06-12 21:22:15,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:22:15,610 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:16,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122690346] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:16,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:16,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:22:16,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696760486]
[2021-06-12 21:22:16,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:22:16,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:16,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:22:16,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:22:16,192 INFO L87 Difference]: Start difference. First operand 9510 states and 31709 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:17,999 INFO L93 Difference]: Finished difference Result 13786 states and 44215 transitions.
[2021-06-12 21:22:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2021-06-12 21:22:17,999 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:18,019 INFO L225 Difference]: With dead ends: 13786
[2021-06-12 21:22:18,019 INFO L226 Difference]: Without dead ends: 13622
[2021-06-12 21:22:18,020 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 1742.3ms TimeCoverageRelationStatistics Valid=755, Invalid=3801, Unknown=0, NotChecked=0, Total=4556
[2021-06-12 21:22:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13622 states.
[2021-06-12 21:22:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13622 to 9502.
[2021-06-12 21:22:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9502 states, 9501 states have (on average 3.335333122829176) internal successors, (31689), 9501 states have internal predecessors, (31689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9502 states to 9502 states and 31689 transitions.
[2021-06-12 21:22:18,176 INFO L78 Accepts]: Start accepts. Automaton has 9502 states and 31689 transitions. Word has length 36
[2021-06-12 21:22:18,176 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:18,176 INFO L482 AbstractCegarLoop]: Abstraction has 9502 states and 31689 transitions.
[2021-06-12 21:22:18,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9502 states and 31689 transitions.
[2021-06-12 21:22:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:18,187 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:18,187 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:18,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:18,387 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1597441409, now seen corresponding path program 68 times
[2021-06-12 21:22:18,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:18,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530948868]
[2021-06-12 21:22:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:18,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:18,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530948868]
[2021-06-12 21:22:18,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530948868] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:18,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647876581]
[2021-06-12 21:22:18,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:18,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:22:18,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:18,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:22:18,658 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:19,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647876581] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:19,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:19,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:22:19,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710074341]
[2021-06-12 21:22:19,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:22:19,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:22:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:22:19,238 INFO L87 Difference]: Start difference. First operand 9502 states and 31689 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:24,097 INFO L93 Difference]: Finished difference Result 14876 states and 47515 transitions.
[2021-06-12 21:22:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2021-06-12 21:22:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:24,119 INFO L225 Difference]: With dead ends: 14876
[2021-06-12 21:22:24,119 INFO L226 Difference]: Without dead ends: 14655
[2021-06-12 21:22:24,120 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 3463.8ms TimeCoverageRelationStatistics Valid=1075, Invalid=8627, Unknown=0, NotChecked=0, Total=9702
[2021-06-12 21:22:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14655 states.
[2021-06-12 21:22:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14655 to 9510.
[2021-06-12 21:22:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9510 states, 9509 states have (on average 3.338416237248922) internal successors, (31745), 9509 states have internal predecessors, (31745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 31745 transitions.
[2021-06-12 21:22:24,279 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 31745 transitions. Word has length 36
[2021-06-12 21:22:24,279 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:24,279 INFO L482 AbstractCegarLoop]: Abstraction has 9510 states and 31745 transitions.
[2021-06-12 21:22:24,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 31745 transitions.
[2021-06-12 21:22:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:24,290 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:24,290 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:24,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable587
[2021-06-12 21:22:24,491 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:24,491 INFO L82 PathProgramCache]: Analyzing trace with hash 230155649, now seen corresponding path program 69 times
[2021-06-12 21:22:24,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:24,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601131953]
[2021-06-12 21:22:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:24,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:24,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601131953]
[2021-06-12 21:22:24,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601131953] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:24,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114395289]
[2021-06-12 21:22:24,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:24,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:22:24,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:24,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:22:24,843 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:25,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114395289] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:25,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:25,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:22:25,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158761331]
[2021-06-12 21:22:25,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:22:25,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:25,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:22:25,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:22:25,456 INFO L87 Difference]: Start difference. First operand 9510 states and 31745 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:28,723 INFO L93 Difference]: Finished difference Result 16123 states and 51334 transitions.
[2021-06-12 21:22:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2021-06-12 21:22:28,723 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:28,745 INFO L225 Difference]: With dead ends: 16123
[2021-06-12 21:22:28,746 INFO L226 Difference]: Without dead ends: 16003
[2021-06-12 21:22:28,746 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 2757.0ms TimeCoverageRelationStatistics Valid=1070, Invalid=5410, Unknown=0, NotChecked=0, Total=6480
[2021-06-12 21:22:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16003 states.
[2021-06-12 21:22:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16003 to 9524.
[2021-06-12 21:22:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 9523 states have (on average 3.3400189016066366) internal successors, (31807), 9523 states have internal predecessors, (31807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 31807 transitions.
[2021-06-12 21:22:28,917 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 31807 transitions. Word has length 36
[2021-06-12 21:22:28,917 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:28,917 INFO L482 AbstractCegarLoop]: Abstraction has 9524 states and 31807 transitions.
[2021-06-12 21:22:28,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 31807 transitions.
[2021-06-12 21:22:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:28,928 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:28,928 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:29,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:29,129 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:29,129 INFO L82 PathProgramCache]: Analyzing trace with hash 537469825, now seen corresponding path program 70 times
[2021-06-12 21:22:29,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:29,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034624852]
[2021-06-12 21:22:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-12 21:22:29,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:29,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034624852]
[2021-06-12 21:22:29,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034624852] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:29,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519835955]
[2021-06-12 21:22:29,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:29,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:22:29,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:29,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:22:29,392 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:29,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519835955] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:29,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:29,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:22:29,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564141058]
[2021-06-12 21:22:29,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:22:29,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:29,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:22:29,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:22:29,996 INFO L87 Difference]: Start difference. First operand 9524 states and 31807 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:34,425 INFO L93 Difference]: Finished difference Result 18630 states and 58802 transitions.
[2021-06-12 21:22:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states.
[2021-06-12 21:22:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:34,451 INFO L225 Difference]: With dead ends: 18630
[2021-06-12 21:22:34,451 INFO L226 Difference]: Without dead ends: 18458
[2021-06-12 21:22:34,452 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3234 ImplicationChecksByTransitivity, 3456.8ms TimeCoverageRelationStatistics Valid=1708, Invalid=8392, Unknown=0, NotChecked=0, Total=10100
[2021-06-12 21:22:34,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18458 states.
[2021-06-12 21:22:34,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18458 to 9524.
[2021-06-12 21:22:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 9523 states have (on average 3.3400189016066366) internal successors, (31807), 9523 states have internal predecessors, (31807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 31807 transitions.
[2021-06-12 21:22:34,660 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 31807 transitions. Word has length 36
[2021-06-12 21:22:34,660 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:34,660 INFO L482 AbstractCegarLoop]: Abstraction has 9524 states and 31807 transitions.
[2021-06-12 21:22:34,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 31807 transitions.
[2021-06-12 21:22:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:34,671 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:34,671 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:34,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable598
[2021-06-12 21:22:34,877 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:34,877 INFO L82 PathProgramCache]: Analyzing trace with hash -468984019, now seen corresponding path program 71 times
[2021-06-12 21:22:34,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:34,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883043136]
[2021-06-12 21:22:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:35,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:35,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883043136]
[2021-06-12 21:22:35,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883043136] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:35,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043438088]
[2021-06-12 21:22:35,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:35,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:22:35,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:35,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-06-12 21:22:35,313 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:36,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043438088] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:36,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:36,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:22:36,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116922055]
[2021-06-12 21:22:36,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:22:36,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:36,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:22:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:22:36,016 INFO L87 Difference]: Start difference. First operand 9524 states and 31807 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:37,058 INFO L93 Difference]: Finished difference Result 10252 states and 33744 transitions.
[2021-06-12 21:22:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-06-12 21:22:37,058 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:37,075 INFO L225 Difference]: With dead ends: 10252
[2021-06-12 21:22:37,075 INFO L226 Difference]: Without dead ends: 10198
[2021-06-12 21:22:37,075 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1438.0ms TimeCoverageRelationStatistics Valid=380, Invalid=2272, Unknown=0, NotChecked=0, Total=2652
[2021-06-12 21:22:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10198 states.
[2021-06-12 21:22:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10198 to 9524.
[2021-06-12 21:22:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 9523 states have (on average 3.3421190801218104) internal successors, (31827), 9523 states have internal predecessors, (31827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 31827 transitions.
[2021-06-12 21:22:37,227 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 31827 transitions. Word has length 36
[2021-06-12 21:22:37,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:37,227 INFO L482 AbstractCegarLoop]: Abstraction has 9524 states and 31827 transitions.
[2021-06-12 21:22:37,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 31827 transitions.
[2021-06-12 21:22:37,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:37,239 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:37,239 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:37,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable602
[2021-06-12 21:22:37,439 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1927454253, now seen corresponding path program 72 times
[2021-06-12 21:22:37,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:37,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709425378]
[2021-06-12 21:22:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:37,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:37,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709425378]
[2021-06-12 21:22:37,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709425378] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:37,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119464770]
[2021-06-12 21:22:37,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:37,807 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:22:37,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:37,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:22:37,808 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:38,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119464770] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:38,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:38,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:22:38,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342278202]
[2021-06-12 21:22:38,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:22:38,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:38,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:22:38,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:22:38,430 INFO L87 Difference]: Start difference. First operand 9524 states and 31827 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:40,287 INFO L93 Difference]: Finished difference Result 10196 states and 33634 transitions.
[2021-06-12 21:22:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-06-12 21:22:40,287 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:40,301 INFO L225 Difference]: With dead ends: 10196
[2021-06-12 21:22:40,301 INFO L226 Difference]: Without dead ends: 10082
[2021-06-12 21:22:40,302 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1507.9ms TimeCoverageRelationStatistics Valid=368, Invalid=2388, Unknown=0, NotChecked=0, Total=2756
[2021-06-12 21:22:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10082 states.
[2021-06-12 21:22:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10082 to 9560.
[2021-06-12 21:22:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9560 states, 9559 states have (on average 3.340830630819123) internal successors, (31935), 9559 states have internal predecessors, (31935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9560 states to 9560 states and 31935 transitions.
[2021-06-12 21:22:40,439 INFO L78 Accepts]: Start accepts. Automaton has 9560 states and 31935 transitions. Word has length 36
[2021-06-12 21:22:40,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:40,440 INFO L482 AbstractCegarLoop]: Abstraction has 9560 states and 31935 transitions.
[2021-06-12 21:22:40,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9560 states and 31935 transitions.
[2021-06-12 21:22:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:40,451 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:40,451 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:40,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:40,651 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:40,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:40,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1089527085, now seen corresponding path program 73 times
[2021-06-12 21:22:40,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:40,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178242214]
[2021-06-12 21:22:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:40,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:40,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178242214]
[2021-06-12 21:22:40,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178242214] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:40,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105582954]
[2021-06-12 21:22:40,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:40,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:22:40,903 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:41,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105582954] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:41,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:41,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:22:41,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850217839]
[2021-06-12 21:22:41,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:22:41,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:41,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:22:41,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:22:41,489 INFO L87 Difference]: Start difference. First operand 9560 states and 31935 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:43,029 INFO L93 Difference]: Finished difference Result 10336 states and 34015 transitions.
[2021-06-12 21:22:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:22:43,029 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:43,044 INFO L225 Difference]: With dead ends: 10336
[2021-06-12 21:22:43,044 INFO L226 Difference]: Without dead ends: 10156
[2021-06-12 21:22:43,044 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1356.0ms TimeCoverageRelationStatistics Valid=466, Invalid=2726, Unknown=0, NotChecked=0, Total=3192
[2021-06-12 21:22:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states.
[2021-06-12 21:22:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 9528.
[2021-06-12 21:22:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9528 states, 9527 states have (on average 3.3432350162695497) internal successors, (31851), 9527 states have internal predecessors, (31851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9528 states to 9528 states and 31851 transitions.
[2021-06-12 21:22:43,188 INFO L78 Accepts]: Start accepts. Automaton has 9528 states and 31851 transitions. Word has length 36
[2021-06-12 21:22:43,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:43,188 INFO L482 AbstractCegarLoop]: Abstraction has 9528 states and 31851 transitions.
[2021-06-12 21:22:43,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 9528 states and 31851 transitions.
[2021-06-12 21:22:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:43,199 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:43,199 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:43,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:43,400 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -465824463, now seen corresponding path program 74 times
[2021-06-12 21:22:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:43,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336698110]
[2021-06-12 21:22:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:43,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:43,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336698110]
[2021-06-12 21:22:43,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336698110] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:43,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001540663]
[2021-06-12 21:22:43,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:43,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:22:43,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:43,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:22:43,757 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:44,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001540663] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:44,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:44,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35
[2021-06-12 21:22:44,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148331794]
[2021-06-12 21:22:44,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:22:44,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:22:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:22:44,453 INFO L87 Difference]: Start difference. First operand 9528 states and 31851 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:47,694 INFO L93 Difference]: Finished difference Result 13472 states and 43399 transitions.
[2021-06-12 21:22:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:22:47,695 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:47,713 INFO L225 Difference]: With dead ends: 13472
[2021-06-12 21:22:47,714 INFO L226 Difference]: Without dead ends: 13358
[2021-06-12 21:22:47,714 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 2600.1ms TimeCoverageRelationStatistics Valid=799, Invalid=5207, Unknown=0, NotChecked=0, Total=6006
[2021-06-12 21:22:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13358 states.
[2021-06-12 21:22:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13358 to 9512.
[2021-06-12 21:22:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9512 states, 9511 states have (on average 3.344232993376091) internal successors, (31807), 9511 states have internal predecessors, (31807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 31807 transitions.
[2021-06-12 21:22:47,875 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 31807 transitions. Word has length 36
[2021-06-12 21:22:47,875 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:47,875 INFO L482 AbstractCegarLoop]: Abstraction has 9512 states and 31807 transitions.
[2021-06-12 21:22:47,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 31807 transitions.
[2021-06-12 21:22:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:47,886 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:47,886 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:48,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:48,086 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash -701219795, now seen corresponding path program 75 times
[2021-06-12 21:22:48,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:48,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215045540]
[2021-06-12 21:22:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:48,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:48,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215045540]
[2021-06-12 21:22:48,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215045540] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:48,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706087372]
[2021-06-12 21:22:48,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:48,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:22:48,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:48,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:22:48,487 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:49,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706087372] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:49,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:49,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36
[2021-06-12 21:22:49,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669165054]
[2021-06-12 21:22:49,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:22:49,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:49,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:22:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:22:49,160 INFO L87 Difference]: Start difference. First operand 9512 states and 31807 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:53,235 INFO L93 Difference]: Finished difference Result 16362 states and 52136 transitions.
[2021-06-12 21:22:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2021-06-12 21:22:53,235 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:53,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:53,258 INFO L225 Difference]: With dead ends: 16362
[2021-06-12 21:22:53,258 INFO L226 Difference]: Without dead ends: 16221
[2021-06-12 21:22:53,258 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2905 ImplicationChecksByTransitivity, 3367.2ms TimeCoverageRelationStatistics Valid=1441, Invalid=7489, Unknown=0, NotChecked=0, Total=8930
[2021-06-12 21:22:53,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16221 states.
[2021-06-12 21:22:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16221 to 9564.
[2021-06-12 21:22:53,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9564 states, 9563 states have (on average 3.3460211230785317) internal successors, (31998), 9563 states have internal predecessors, (31998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 31998 transitions.
[2021-06-12 21:22:53,434 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 31998 transitions. Word has length 36
[2021-06-12 21:22:53,434 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:53,434 INFO L482 AbstractCegarLoop]: Abstraction has 9564 states and 31998 transitions.
[2021-06-12 21:22:53,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 31998 transitions.
[2021-06-12 21:22:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:53,445 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:53,445 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:53,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable632
[2021-06-12 21:22:53,646 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:53,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1236506063, now seen corresponding path program 76 times
[2021-06-12 21:22:53,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:53,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702118228]
[2021-06-12 21:22:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:53,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:53,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702118228]
[2021-06-12 21:22:53,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702118228] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:53,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963433435]
[2021-06-12 21:22:53,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:53,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:22:53,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:53,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:22:53,920 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:54,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963433435] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:54,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:54,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:22:54,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906012852]
[2021-06-12 21:22:54,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:22:54,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:54,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:22:54,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:22:54,507 INFO L87 Difference]: Start difference. First operand 9564 states and 31998 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:22:56,537 INFO L93 Difference]: Finished difference Result 14020 states and 45032 transitions.
[2021-06-12 21:22:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2021-06-12 21:22:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:22:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:22:56,558 INFO L225 Difference]: With dead ends: 14020
[2021-06-12 21:22:56,558 INFO L226 Difference]: Without dead ends: 13808
[2021-06-12 21:22:56,559 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1869.3ms TimeCoverageRelationStatistics Valid=736, Invalid=4520, Unknown=0, NotChecked=0, Total=5256
[2021-06-12 21:22:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13808 states.
[2021-06-12 21:22:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13808 to 9532.
[2021-06-12 21:22:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9532 states, 9531 states have (on average 3.348861609484839) internal successors, (31918), 9531 states have internal predecessors, (31918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 31918 transitions.
[2021-06-12 21:22:56,722 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 31918 transitions. Word has length 36
[2021-06-12 21:22:56,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:22:56,722 INFO L482 AbstractCegarLoop]: Abstraction has 9532 states and 31918 transitions.
[2021-06-12 21:22:56,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:22:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 31918 transitions.
[2021-06-12 21:22:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:22:56,733 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:22:56,733 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:22:56,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable641
[2021-06-12 21:22:56,933 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:22:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:22:56,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1558426579, now seen corresponding path program 77 times
[2021-06-12 21:22:56,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:22:56,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607853903]
[2021-06-12 21:22:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:22:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:22:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:57,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:22:57,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607853903]
[2021-06-12 21:22:57,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607853903] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:57,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097953335]
[2021-06-12 21:22:57,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:22:57,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:22:57,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:22:57,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:22:57,202 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:22:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:22:57,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097953335] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:22:57,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:22:57,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:22:57,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94940277]
[2021-06-12 21:22:57,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:22:57,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:22:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:22:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:22:57,822 INFO L87 Difference]: Start difference. First operand 9532 states and 31918 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:00,346 INFO L93 Difference]: Finished difference Result 14454 states and 46414 transitions.
[2021-06-12 21:23:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:23:00,347 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:00,366 INFO L225 Difference]: With dead ends: 14454
[2021-06-12 21:23:00,366 INFO L226 Difference]: Without dead ends: 14270
[2021-06-12 21:23:00,367 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1920 ImplicationChecksByTransitivity, 2186.3ms TimeCoverageRelationStatistics Valid=874, Invalid=5288, Unknown=0, NotChecked=0, Total=6162
[2021-06-12 21:23:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14270 states.
[2021-06-12 21:23:00,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14270 to 9504.
[2021-06-12 21:23:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9504 states, 9503 states have (on average 3.351994107124066) internal successors, (31854), 9503 states have internal predecessors, (31854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9504 states to 9504 states and 31854 transitions.
[2021-06-12 21:23:00,525 INFO L78 Accepts]: Start accepts. Automaton has 9504 states and 31854 transitions. Word has length 36
[2021-06-12 21:23:00,525 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:00,525 INFO L482 AbstractCegarLoop]: Abstraction has 9504 states and 31854 transitions.
[2021-06-12 21:23:00,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9504 states and 31854 transitions.
[2021-06-12 21:23:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:00,536 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:00,536 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:00,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:00,737 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:00,737 INFO L82 PathProgramCache]: Analyzing trace with hash -819004623, now seen corresponding path program 78 times
[2021-06-12 21:23:00,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:00,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87173085]
[2021-06-12 21:23:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:00,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:00,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87173085]
[2021-06-12 21:23:00,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87173085] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:00,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289647410]
[2021-06-12 21:23:00,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:01,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:23:01,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:01,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:23:01,011 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:01,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289647410] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:01,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:01,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:23:01,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827005984]
[2021-06-12 21:23:01,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:01,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:01,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:01,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1133, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:01,545 INFO L87 Difference]: Start difference. First operand 9504 states and 31854 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:06,473 INFO L93 Difference]: Finished difference Result 16078 states and 51312 transitions.
[2021-06-12 21:23:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2021-06-12 21:23:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:06,495 INFO L225 Difference]: With dead ends: 16078
[2021-06-12 21:23:06,495 INFO L226 Difference]: Without dead ends: 15779
[2021-06-12 21:23:06,496 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3988 ImplicationChecksByTransitivity, 3648.8ms TimeCoverageRelationStatistics Valid=1235, Invalid=10537, Unknown=0, NotChecked=0, Total=11772
[2021-06-12 21:23:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15779 states.
[2021-06-12 21:23:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15779 to 9476.
[2021-06-12 21:23:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9476 states, 9475 states have (on average 3.35155672823219) internal successors, (31756), 9475 states have internal predecessors, (31756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9476 states to 9476 states and 31756 transitions.
[2021-06-12 21:23:06,669 INFO L78 Accepts]: Start accepts. Automaton has 9476 states and 31756 transitions. Word has length 36
[2021-06-12 21:23:06,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:06,669 INFO L482 AbstractCegarLoop]: Abstraction has 9476 states and 31756 transitions.
[2021-06-12 21:23:06,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9476 states and 31756 transitions.
[2021-06-12 21:23:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:06,680 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:06,680 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:06,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable649
[2021-06-12 21:23:06,880 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash 181846573, now seen corresponding path program 79 times
[2021-06-12 21:23:06,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:06,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427080673]
[2021-06-12 21:23:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:07,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:07,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427080673]
[2021-06-12 21:23:07,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427080673] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:07,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255984382]
[2021-06-12 21:23:07,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:07,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:23:07,181 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:07,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255984382] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:07,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:07,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38
[2021-06-12 21:23:07,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339512366]
[2021-06-12 21:23:07,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states
[2021-06-12 21:23:07,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2021-06-12 21:23:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1269, Unknown=0, NotChecked=0, Total=1482
[2021-06-12 21:23:07,836 INFO L87 Difference]: Start difference. First operand 9476 states and 31756 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:11,973 INFO L93 Difference]: Finished difference Result 16847 states and 53541 transitions.
[2021-06-12 21:23:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2021-06-12 21:23:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:11,997 INFO L225 Difference]: With dead ends: 16847
[2021-06-12 21:23:11,997 INFO L226 Difference]: Without dead ends: 16599
[2021-06-12 21:23:11,997 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3251 ImplicationChecksByTransitivity, 3226.4ms TimeCoverageRelationStatistics Valid=1311, Invalid=8789, Unknown=0, NotChecked=0, Total=10100
[2021-06-12 21:23:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16599 states.
[2021-06-12 21:23:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16599 to 9476.
[2021-06-12 21:23:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9476 states, 9475 states have (on average 3.350817941952507) internal successors, (31749), 9475 states have internal predecessors, (31749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9476 states to 9476 states and 31749 transitions.
[2021-06-12 21:23:12,188 INFO L78 Accepts]: Start accepts. Automaton has 9476 states and 31749 transitions. Word has length 36
[2021-06-12 21:23:12,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:12,188 INFO L482 AbstractCegarLoop]: Abstraction has 9476 states and 31749 transitions.
[2021-06-12 21:23:12,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 9476 states and 31749 transitions.
[2021-06-12 21:23:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:12,199 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:12,199 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:12,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable653
[2021-06-12 21:23:12,399 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1929174223, now seen corresponding path program 80 times
[2021-06-12 21:23:12,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:12,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057913881]
[2021-06-12 21:23:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:12,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:12,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057913881]
[2021-06-12 21:23:12,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057913881] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:12,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869404681]
[2021-06-12 21:23:12,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-06-12 21:23:12,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:23:12,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:12,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:23:12,715 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:13,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869404681] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:13,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:13,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:23:13,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671047530]
[2021-06-12 21:23:13,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:13,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:13,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:13,347 INFO L87 Difference]: Start difference. First operand 9476 states and 31749 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:19,303 INFO L93 Difference]: Finished difference Result 18120 states and 57307 transitions.
[2021-06-12 21:23:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states.
[2021-06-12 21:23:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:19,328 INFO L225 Difference]: With dead ends: 18120
[2021-06-12 21:23:19,328 INFO L226 Difference]: Without dead ends: 17937
[2021-06-12 21:23:19,329 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 4525.8ms TimeCoverageRelationStatistics Valid=1926, Invalid=11880, Unknown=0, NotChecked=0, Total=13806
[2021-06-12 21:23:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17937 states.
[2021-06-12 21:23:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17937 to 9447.
[2021-06-12 21:23:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9447 states, 9446 states have (on average 3.34977768367563) internal successors, (31642), 9446 states have internal predecessors, (31642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 31642 transitions.
[2021-06-12 21:23:19,538 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 31642 transitions. Word has length 36
[2021-06-12 21:23:19,538 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:19,538 INFO L482 AbstractCegarLoop]: Abstraction has 9447 states and 31642 transitions.
[2021-06-12 21:23:19,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 31642 transitions.
[2021-06-12 21:23:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:19,550 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:19,550 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:19,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:19,759 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1421770865, now seen corresponding path program 81 times
[2021-06-12 21:23:19,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:19,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406992041]
[2021-06-12 21:23:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:20,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:20,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406992041]
[2021-06-12 21:23:20,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406992041] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:20,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987427343]
[2021-06-12 21:23:20,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:20,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:23:20,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:20,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:23:20,165 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:20,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987427343] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:20,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:20,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35
[2021-06-12 21:23:20,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312429245]
[2021-06-12 21:23:20,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:23:20,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:20,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:23:20,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:23:20,865 INFO L87 Difference]: Start difference. First operand 9447 states and 31642 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:24,451 INFO L93 Difference]: Finished difference Result 18867 states and 60832 transitions.
[2021-06-12 21:23:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2021-06-12 21:23:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:24,479 INFO L225 Difference]: With dead ends: 18867
[2021-06-12 21:23:24,479 INFO L226 Difference]: Without dead ends: 18741
[2021-06-12 21:23:24,480 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 3144.1ms TimeCoverageRelationStatistics Valid=1200, Invalid=6632, Unknown=0, NotChecked=0, Total=7832
[2021-06-12 21:23:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18741 states.
[2021-06-12 21:23:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18741 to 9611.
[2021-06-12 21:23:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9611 states, 9610 states have (on average 3.3521331945889696) internal successors, (32214), 9610 states have internal predecessors, (32214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9611 states to 9611 states and 32214 transitions.
[2021-06-12 21:23:24,682 INFO L78 Accepts]: Start accepts. Automaton has 9611 states and 32214 transitions. Word has length 36
[2021-06-12 21:23:24,682 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:24,682 INFO L482 AbstractCegarLoop]: Abstraction has 9611 states and 32214 transitions.
[2021-06-12 21:23:24,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9611 states and 32214 transitions.
[2021-06-12 21:23:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:24,693 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:24,693 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:24,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable661
[2021-06-12 21:23:24,893 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:24,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1054229233, now seen corresponding path program 82 times
[2021-06-12 21:23:24,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:24,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286967802]
[2021-06-12 21:23:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:25,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:25,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286967802]
[2021-06-12 21:23:25,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286967802] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:25,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922828642]
[2021-06-12 21:23:25,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:25,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:23:25,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:25,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:23:25,258 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:26,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922828642] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:26,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:26,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:23:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329650442]
[2021-06-12 21:23:26,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:26,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:26,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:26,036 INFO L87 Difference]: Start difference. First operand 9611 states and 32214 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:27,379 INFO L93 Difference]: Finished difference Result 12393 states and 40388 transitions.
[2021-06-12 21:23:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-06-12 21:23:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:27,399 INFO L225 Difference]: With dead ends: 12393
[2021-06-12 21:23:27,399 INFO L226 Difference]: Without dead ends: 12305
[2021-06-12 21:23:27,400 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1675.6ms TimeCoverageRelationStatistics Valid=518, Invalid=2904, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:23:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states.
[2021-06-12 21:23:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 9755.
[2021-06-12 21:23:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9755 states, 9754 states have (on average 3.352778347344679) internal successors, (32703), 9754 states have internal predecessors, (32703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 32703 transitions.
[2021-06-12 21:23:27,612 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 32703 transitions. Word has length 36
[2021-06-12 21:23:27,612 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:27,612 INFO L482 AbstractCegarLoop]: Abstraction has 9755 states and 32703 transitions.
[2021-06-12 21:23:27,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 32703 transitions.
[2021-06-12 21:23:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:27,623 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:27,623 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:27,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable673
[2021-06-12 21:23:27,823 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:27,824 INFO L82 PathProgramCache]: Analyzing trace with hash -973016591, now seen corresponding path program 83 times
[2021-06-12 21:23:27,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:27,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860528271]
[2021-06-12 21:23:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:28,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:28,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860528271]
[2021-06-12 21:23:28,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860528271] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:28,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977128405]
[2021-06-12 21:23:28,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:28,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:23:28,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:28,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-06-12 21:23:28,176 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:28,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977128405] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:28,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:28,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:23:28,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804661694]
[2021-06-12 21:23:28,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:23:28,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:28,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:23:28,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:23:28,819 INFO L87 Difference]: Start difference. First operand 9755 states and 32703 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:31,945 INFO L93 Difference]: Finished difference Result 16119 states and 52115 transitions.
[2021-06-12 21:23:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2021-06-12 21:23:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:31,970 INFO L225 Difference]: With dead ends: 16119
[2021-06-12 21:23:31,970 INFO L226 Difference]: Without dead ends: 16030
[2021-06-12 21:23:31,971 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 2795.4ms TimeCoverageRelationStatistics Valid=1169, Invalid=4993, Unknown=0, NotChecked=0, Total=6162
[2021-06-12 21:23:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16030 states.
[2021-06-12 21:23:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16030 to 9777.
[2021-06-12 21:23:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9777 states, 9776 states have (on average 3.3548486088379708) internal successors, (32797), 9776 states have internal predecessors, (32797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9777 states to 9777 states and 32797 transitions.
[2021-06-12 21:23:32,156 INFO L78 Accepts]: Start accepts. Automaton has 9777 states and 32797 transitions. Word has length 36
[2021-06-12 21:23:32,156 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:32,156 INFO L482 AbstractCegarLoop]: Abstraction has 9777 states and 32797 transitions.
[2021-06-12 21:23:32,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 9777 states and 32797 transitions.
[2021-06-12 21:23:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:32,167 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:32,168 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:32,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:32,368 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash -177869115, now seen corresponding path program 84 times
[2021-06-12 21:23:32,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:32,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990054736]
[2021-06-12 21:23:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:32,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:32,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990054736]
[2021-06-12 21:23:32,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990054736] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:32,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466962880]
[2021-06-12 21:23:32,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:32,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:23:32,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:32,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:23:32,736 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:33,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466962880] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:33,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:33,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:23:33,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639060451]
[2021-06-12 21:23:33,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:23:33,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:23:33,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:23:33,356 INFO L87 Difference]: Start difference. First operand 9777 states and 32797 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:34,754 INFO L93 Difference]: Finished difference Result 11889 states and 39337 transitions.
[2021-06-12 21:23:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-12 21:23:34,754 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:34,772 INFO L225 Difference]: With dead ends: 11889
[2021-06-12 21:23:34,772 INFO L226 Difference]: Without dead ends: 11769
[2021-06-12 21:23:34,772 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1434.7ms TimeCoverageRelationStatistics Valid=435, Invalid=2115, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:23:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11769 states.
[2021-06-12 21:23:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11769 to 9821.
[2021-06-12 21:23:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9821 states, 9820 states have (on average 3.355906313645621) internal successors, (32955), 9820 states have internal predecessors, (32955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9821 states to 9821 states and 32955 transitions.
[2021-06-12 21:23:34,939 INFO L78 Accepts]: Start accepts. Automaton has 9821 states and 32955 transitions. Word has length 36
[2021-06-12 21:23:34,940 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:34,940 INFO L482 AbstractCegarLoop]: Abstraction has 9821 states and 32955 transitions.
[2021-06-12 21:23:34,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9821 states and 32955 transitions.
[2021-06-12 21:23:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:34,951 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:34,951 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:35,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:35,151 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash -247979151, now seen corresponding path program 85 times
[2021-06-12 21:23:35,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:35,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525821306]
[2021-06-12 21:23:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:35,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:35,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525821306]
[2021-06-12 21:23:35,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525821306] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:35,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785951091]
[2021-06-12 21:23:35,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:35,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:23:35,489 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:36,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785951091] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:36,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:36,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:23:36,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021793385]
[2021-06-12 21:23:36,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:23:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:36,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:23:36,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:23:36,155 INFO L87 Difference]: Start difference. First operand 9821 states and 32955 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:37,606 INFO L93 Difference]: Finished difference Result 11087 states and 36748 transitions.
[2021-06-12 21:23:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-06-12 21:23:37,606 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:37,622 INFO L225 Difference]: With dead ends: 11087
[2021-06-12 21:23:37,622 INFO L226 Difference]: Without dead ends: 10967
[2021-06-12 21:23:37,622 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1427.9ms TimeCoverageRelationStatistics Valid=436, Invalid=2114, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:23:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states.
[2021-06-12 21:23:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 9829.
[2021-06-12 21:23:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9829 states, 9828 states have (on average 3.3556166056166057) internal successors, (32979), 9828 states have internal predecessors, (32979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9829 states to 9829 states and 32979 transitions.
[2021-06-12 21:23:37,764 INFO L78 Accepts]: Start accepts. Automaton has 9829 states and 32979 transitions. Word has length 36
[2021-06-12 21:23:37,764 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:37,764 INFO L482 AbstractCegarLoop]: Abstraction has 9829 states and 32979 transitions.
[2021-06-12 21:23:37,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 9829 states and 32979 transitions.
[2021-06-12 21:23:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:37,776 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:37,776 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:37,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable699
[2021-06-12 21:23:37,992 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1232893229, now seen corresponding path program 86 times
[2021-06-12 21:23:37,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:37,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213420873]
[2021-06-12 21:23:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:38,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:38,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213420873]
[2021-06-12 21:23:38,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213420873] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:38,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208437425]
[2021-06-12 21:23:38,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:38,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:23:38,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:38,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:23:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:38,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208437425] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:38,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:38,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:23:38,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658987435]
[2021-06-12 21:23:38,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:23:38,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:38,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:23:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:23:38,953 INFO L87 Difference]: Start difference. First operand 9829 states and 32979 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:41,159 INFO L93 Difference]: Finished difference Result 15232 states and 49054 transitions.
[2021-06-12 21:23:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2021-06-12 21:23:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:41,183 INFO L225 Difference]: With dead ends: 15232
[2021-06-12 21:23:41,183 INFO L226 Difference]: Without dead ends: 15054
[2021-06-12 21:23:41,184 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 2235.7ms TimeCoverageRelationStatistics Valid=993, Invalid=4119, Unknown=0, NotChecked=0, Total=5112
[2021-06-12 21:23:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states.
[2021-06-12 21:23:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 9895.
[2021-06-12 21:23:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9895 states, 9894 states have (on average 3.355771174449161) internal successors, (33202), 9894 states have internal predecessors, (33202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9895 states to 9895 states and 33202 transitions.
[2021-06-12 21:23:41,375 INFO L78 Accepts]: Start accepts. Automaton has 9895 states and 33202 transitions. Word has length 36
[2021-06-12 21:23:41,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:41,375 INFO L482 AbstractCegarLoop]: Abstraction has 9895 states and 33202 transitions.
[2021-06-12 21:23:41,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9895 states and 33202 transitions.
[2021-06-12 21:23:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:41,387 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:41,387 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:41,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:41,588 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:41,589 INFO L82 PathProgramCache]: Analyzing trace with hash -586316687, now seen corresponding path program 87 times
[2021-06-12 21:23:41,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:41,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676746911]
[2021-06-12 21:23:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:41,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:41,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676746911]
[2021-06-12 21:23:41,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676746911] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:41,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510361809]
[2021-06-12 21:23:41,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:41,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2021-06-12 21:23:41,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:41,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:23:41,965 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:42,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510361809] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:42,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:42,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:23:42,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999869399]
[2021-06-12 21:23:42,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:23:42,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:23:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:23:42,606 INFO L87 Difference]: Start difference. First operand 9895 states and 33202 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:43,862 INFO L93 Difference]: Finished difference Result 11244 states and 37234 transitions.
[2021-06-12 21:23:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-06-12 21:23:43,862 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:43,879 INFO L225 Difference]: With dead ends: 11244
[2021-06-12 21:23:43,879 INFO L226 Difference]: Without dead ends: 11124
[2021-06-12 21:23:43,879 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1463.7ms TimeCoverageRelationStatistics Valid=419, Invalid=2031, Unknown=0, NotChecked=0, Total=2450
[2021-06-12 21:23:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11124 states.
[2021-06-12 21:23:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11124 to 9889.
[2021-06-12 21:23:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 3.3549757281553396) internal successors, (33174), 9888 states have internal predecessors, (33174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 33174 transitions.
[2021-06-12 21:23:44,065 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 33174 transitions. Word has length 36
[2021-06-12 21:23:44,065 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:44,065 INFO L482 AbstractCegarLoop]: Abstraction has 9889 states and 33174 transitions.
[2021-06-12 21:23:44,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 33174 transitions.
[2021-06-12 21:23:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:44,076 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:44,076 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:44,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable720
[2021-06-12 21:23:44,277 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:44,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:44,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1839151365, now seen corresponding path program 88 times
[2021-06-12 21:23:44,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:44,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937311036]
[2021-06-12 21:23:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:44,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:44,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937311036]
[2021-06-12 21:23:44,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937311036] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:44,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375105203]
[2021-06-12 21:23:44,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:44,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:23:44,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:23:44,614 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:45,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375105203] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:45,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:45,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:23:45,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811550399]
[2021-06-12 21:23:45,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:45,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:45,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:45,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:45,239 INFO L87 Difference]: Start difference. First operand 9889 states and 33174 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:46,858 INFO L93 Difference]: Finished difference Result 12166 states and 39930 transitions.
[2021-06-12 21:23:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2021-06-12 21:23:46,859 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:46,876 INFO L225 Difference]: With dead ends: 12166
[2021-06-12 21:23:46,876 INFO L226 Difference]: Without dead ends: 12085
[2021-06-12 21:23:46,876 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1604.0ms TimeCoverageRelationStatistics Valid=548, Invalid=2874, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:23:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12085 states.
[2021-06-12 21:23:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12085 to 10045.
[2021-06-12 21:23:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10045 states, 10044 states have (on average 3.346674631620868) internal successors, (33614), 10044 states have internal predecessors, (33614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10045 states to 10045 states and 33614 transitions.
[2021-06-12 21:23:47,040 INFO L78 Accepts]: Start accepts. Automaton has 10045 states and 33614 transitions. Word has length 36
[2021-06-12 21:23:47,040 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:47,040 INFO L482 AbstractCegarLoop]: Abstraction has 10045 states and 33614 transitions.
[2021-06-12 21:23:47,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10045 states and 33614 transitions.
[2021-06-12 21:23:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:47,051 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:47,052 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:47,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable729,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:47,252 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1001224197, now seen corresponding path program 89 times
[2021-06-12 21:23:47,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:47,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679274447]
[2021-06-12 21:23:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:47,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:47,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679274447]
[2021-06-12 21:23:47,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679274447] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:47,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501408185]
[2021-06-12 21:23:47,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:47,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:23:47,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:47,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:23:47,518 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:48,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501408185] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:48,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:48,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:23:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225234127]
[2021-06-12 21:23:48,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:48,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:48,052 INFO L87 Difference]: Start difference. First operand 10045 states and 33614 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:49,669 INFO L93 Difference]: Finished difference Result 11167 states and 36662 transitions.
[2021-06-12 21:23:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2021-06-12 21:23:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:49,685 INFO L225 Difference]: With dead ends: 11167
[2021-06-12 21:23:49,686 INFO L226 Difference]: Without dead ends: 10971
[2021-06-12 21:23:49,686 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 1521.2ms TimeCoverageRelationStatistics Valid=619, Invalid=3413, Unknown=0, NotChecked=0, Total=4032
[2021-06-12 21:23:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states.
[2021-06-12 21:23:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 10005.
[2021-06-12 21:23:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10005 states, 10004 states have (on average 3.3494602159136346) internal successors, (33508), 10004 states have internal predecessors, (33508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 33508 transitions.
[2021-06-12 21:23:49,838 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 33508 transitions. Word has length 36
[2021-06-12 21:23:49,838 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:49,838 INFO L482 AbstractCegarLoop]: Abstraction has 10005 states and 33508 transitions.
[2021-06-12 21:23:49,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 33508 transitions.
[2021-06-12 21:23:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:49,850 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:49,850 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:50,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable736,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:50,050 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:50,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:50,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1517230849, now seen corresponding path program 90 times
[2021-06-12 21:23:50,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:50,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575267563]
[2021-06-12 21:23:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:50,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:50,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575267563]
[2021-06-12 21:23:50,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575267563] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:50,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127231638]
[2021-06-12 21:23:50,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:50,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:23:50,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:50,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:23:50,397 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:50,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127231638] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:50,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:50,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:23:50,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460747409]
[2021-06-12 21:23:50,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:23:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:50,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:23:50,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:23:50,981 INFO L87 Difference]: Start difference. First operand 10005 states and 33508 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:53,208 INFO L93 Difference]: Finished difference Result 13055 states and 42752 transitions.
[2021-06-12 21:23:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-06-12 21:23:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:53,229 INFO L225 Difference]: With dead ends: 13055
[2021-06-12 21:23:53,229 INFO L226 Difference]: Without dead ends: 12935
[2021-06-12 21:23:53,230 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1978.2ms TimeCoverageRelationStatistics Valid=651, Invalid=3509, Unknown=0, NotChecked=0, Total=4160
[2021-06-12 21:23:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12935 states.
[2021-06-12 21:23:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12935 to 10115.
[2021-06-12 21:23:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10115 states, 10114 states have (on average 3.3494166501878584) internal successors, (33876), 10114 states have internal predecessors, (33876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10115 states to 10115 states and 33876 transitions.
[2021-06-12 21:23:53,396 INFO L78 Accepts]: Start accepts. Automaton has 10115 states and 33876 transitions. Word has length 36
[2021-06-12 21:23:53,396 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:53,396 INFO L482 AbstractCegarLoop]: Abstraction has 10115 states and 33876 transitions.
[2021-06-12 21:23:53,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10115 states and 33876 transitions.
[2021-06-12 21:23:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:53,408 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:53,408 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:53,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable740,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:53,608 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash 679303681, now seen corresponding path program 91 times
[2021-06-12 21:23:53,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:53,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865114895]
[2021-06-12 21:23:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:53,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:53,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865114895]
[2021-06-12 21:23:53,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865114895] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:53,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514019220]
[2021-06-12 21:23:53,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:53,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:23:53,902 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:54,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514019220] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:54,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:54,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:23:54,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856220611]
[2021-06-12 21:23:54,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:54,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:54,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1126, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:54,445 INFO L87 Difference]: Start difference. First operand 10115 states and 33876 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:23:56,045 INFO L93 Difference]: Finished difference Result 11431 states and 37513 transitions.
[2021-06-12 21:23:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-06-12 21:23:56,045 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:23:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:23:56,062 INFO L225 Difference]: With dead ends: 11431
[2021-06-12 21:23:56,062 INFO L226 Difference]: Without dead ends: 11251
[2021-06-12 21:23:56,062 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 1638.2ms TimeCoverageRelationStatistics Valid=685, Invalid=3737, Unknown=0, NotChecked=0, Total=4422
[2021-06-12 21:23:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11251 states.
[2021-06-12 21:23:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11251 to 10071.
[2021-06-12 21:23:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10071 states, 10070 states have (on average 3.3531281032770606) internal successors, (33766), 10070 states have internal predecessors, (33766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10071 states to 10071 states and 33766 transitions.
[2021-06-12 21:23:56,233 INFO L78 Accepts]: Start accepts. Automaton has 10071 states and 33766 transitions. Word has length 36
[2021-06-12 21:23:56,233 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:23:56,233 INFO L482 AbstractCegarLoop]: Abstraction has 10071 states and 33766 transitions.
[2021-06-12 21:23:56,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:23:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10071 states and 33766 transitions.
[2021-06-12 21:23:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:23:56,245 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:23:56,245 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:23:56,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable750
[2021-06-12 21:23:56,445 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:23:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:23:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1418725637, now seen corresponding path program 92 times
[2021-06-12 21:23:56,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:23:56,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740657582]
[2021-06-12 21:23:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:23:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:23:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:56,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:23:56,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740657582]
[2021-06-12 21:23:56,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740657582] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:56,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131550619]
[2021-06-12 21:23:56,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:23:56,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:23:56,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:23:56,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:23:56,705 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:23:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:23:57,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131550619] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:23:57,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:23:57,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:23:57,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752622300]
[2021-06-12 21:23:57,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:23:57,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:23:57,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:23:57,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:23:57,228 INFO L87 Difference]: Start difference. First operand 10071 states and 33766 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:00,570 INFO L93 Difference]: Finished difference Result 15223 states and 49001 transitions.
[2021-06-12 21:24:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2021-06-12 21:24:00,571 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:00,598 INFO L225 Difference]: With dead ends: 15223
[2021-06-12 21:24:00,598 INFO L226 Difference]: Without dead ends: 14956
[2021-06-12 21:24:00,598 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 2512.1ms TimeCoverageRelationStatistics Valid=1072, Invalid=6760, Unknown=0, NotChecked=0, Total=7832
[2021-06-12 21:24:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14956 states.
[2021-06-12 21:24:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14956 to 10150.
[2021-06-12 21:24:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10150 states, 10149 states have (on average 3.3555030052221895) internal successors, (34055), 10149 states have internal predecessors, (34055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 34055 transitions.
[2021-06-12 21:24:00,844 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 34055 transitions. Word has length 36
[2021-06-12 21:24:00,844 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:00,844 INFO L482 AbstractCegarLoop]: Abstraction has 10150 states and 34055 transitions.
[2021-06-12 21:24:00,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 34055 transitions.
[2021-06-12 21:24:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:00,855 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:00,855 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:01,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable754
[2021-06-12 21:24:01,056 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 308556037, now seen corresponding path program 93 times
[2021-06-12 21:24:01,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:01,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055215598]
[2021-06-12 21:24:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:01,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:01,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055215598]
[2021-06-12 21:24:01,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055215598] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:01,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091559673]
[2021-06-12 21:24:01,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:01,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:24:01,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:01,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:24:01,338 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:01,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091559673] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:01,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:01,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:24:01,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413532352]
[2021-06-12 21:24:01,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:01,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:01,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:01,855 INFO L87 Difference]: Start difference. First operand 10150 states and 34055 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:06,593 INFO L93 Difference]: Finished difference Result 17668 states and 56234 transitions.
[2021-06-12 21:24:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states.
[2021-06-12 21:24:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:06,616 INFO L225 Difference]: With dead ends: 17668
[2021-06-12 21:24:06,617 INFO L226 Difference]: Without dead ends: 17485
[2021-06-12 21:24:06,617 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3821 ImplicationChecksByTransitivity, 3598.7ms TimeCoverageRelationStatistics Valid=1786, Invalid=9770, Unknown=0, NotChecked=0, Total=11556
[2021-06-12 21:24:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17485 states.
[2021-06-12 21:24:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17485 to 10150.
[2021-06-12 21:24:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10150 states, 10149 states have (on average 3.3555030052221895) internal successors, (34055), 10149 states have internal predecessors, (34055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 34055 transitions.
[2021-06-12 21:24:06,828 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 34055 transitions. Word has length 36
[2021-06-12 21:24:06,828 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:06,828 INFO L482 AbstractCegarLoop]: Abstraction has 10150 states and 34055 transitions.
[2021-06-12 21:24:06,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 34055 transitions.
[2021-06-12 21:24:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:06,843 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:06,844 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:07,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable758,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:07,044 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:07,044 INFO L82 PathProgramCache]: Analyzing trace with hash -8773971, now seen corresponding path program 94 times
[2021-06-12 21:24:07,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:07,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119353655]
[2021-06-12 21:24:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:07,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:07,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119353655]
[2021-06-12 21:24:07,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119353655] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:07,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242348718]
[2021-06-12 21:24:07,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:07,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:24:07,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:07,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:24:07,381 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:08,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242348718] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:08,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:08,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:24:08,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109892566]
[2021-06-12 21:24:08,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:08,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:08,031 INFO L87 Difference]: Start difference. First operand 10150 states and 34055 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:09,780 INFO L93 Difference]: Finished difference Result 12773 states and 41981 transitions.
[2021-06-12 21:24:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2021-06-12 21:24:09,780 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:09,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:09,801 INFO L225 Difference]: With dead ends: 12773
[2021-06-12 21:24:09,801 INFO L226 Difference]: Without dead ends: 12692
[2021-06-12 21:24:09,801 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1779.7ms TimeCoverageRelationStatistics Valid=597, Invalid=3185, Unknown=0, NotChecked=0, Total=3782
[2021-06-12 21:24:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states.
[2021-06-12 21:24:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 10326.
[2021-06-12 21:24:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10326 states, 10325 states have (on average 3.3506053268765132) internal successors, (34595), 10325 states have internal predecessors, (34595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10326 states to 10326 states and 34595 transitions.
[2021-06-12 21:24:09,968 INFO L78 Accepts]: Start accepts. Automaton has 10326 states and 34595 transitions. Word has length 36
[2021-06-12 21:24:09,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:09,968 INFO L482 AbstractCegarLoop]: Abstraction has 10326 states and 34595 transitions.
[2021-06-12 21:24:09,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10326 states and 34595 transitions.
[2021-06-12 21:24:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:09,980 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:09,980 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:10,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable762
[2021-06-12 21:24:10,180 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash -846701139, now seen corresponding path program 95 times
[2021-06-12 21:24:10,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:10,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710110426]
[2021-06-12 21:24:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:10,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:10,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710110426]
[2021-06-12 21:24:10,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710110426] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:10,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683800814]
[2021-06-12 21:24:10,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:10,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:24:10,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:10,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:24:10,442 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:11,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683800814] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:11,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:11,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:24:11,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520748286]
[2021-06-12 21:24:11,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:11,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:11,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:11,025 INFO L87 Difference]: Start difference. First operand 10326 states and 34595 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:13,061 INFO L93 Difference]: Finished difference Result 11312 states and 37251 transitions.
[2021-06-12 21:24:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2021-06-12 21:24:13,061 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:13,078 INFO L225 Difference]: With dead ends: 11312
[2021-06-12 21:24:13,078 INFO L226 Difference]: Without dead ends: 11132
[2021-06-12 21:24:13,078 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 1933.1ms TimeCoverageRelationStatistics Valid=784, Invalid=4328, Unknown=0, NotChecked=0, Total=5112
[2021-06-12 21:24:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11132 states.
[2021-06-12 21:24:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11132 to 10274.
[2021-06-12 21:24:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10274 states, 10273 states have (on average 3.3549109315681886) internal successors, (34465), 10273 states have internal predecessors, (34465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10274 states to 10274 states and 34465 transitions.
[2021-06-12 21:24:13,258 INFO L78 Accepts]: Start accepts. Automaton has 10274 states and 34465 transitions. Word has length 36
[2021-06-12 21:24:13,258 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:13,258 INFO L482 AbstractCegarLoop]: Abstraction has 10274 states and 34465 transitions.
[2021-06-12 21:24:13,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 10274 states and 34465 transitions.
[2021-06-12 21:24:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:13,269 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:13,270 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:13,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable772
[2021-06-12 21:24:13,470 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1524762959, now seen corresponding path program 96 times
[2021-06-12 21:24:13,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:13,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578831174]
[2021-06-12 21:24:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:13,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:13,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578831174]
[2021-06-12 21:24:13,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578831174] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:13,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687901520]
[2021-06-12 21:24:13,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:13,807 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:24:13,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:13,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:24:13,808 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:14,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687901520] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:14,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:14,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:24:14,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082654807]
[2021-06-12 21:24:14,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:24:14,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:14,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:24:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:24:14,373 INFO L87 Difference]: Start difference. First operand 10274 states and 34465 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:17,567 INFO L93 Difference]: Finished difference Result 16412 states and 53200 transitions.
[2021-06-12 21:24:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:24:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:17,594 INFO L225 Difference]: With dead ends: 16412
[2021-06-12 21:24:17,594 INFO L226 Difference]: Without dead ends: 16286
[2021-06-12 21:24:17,595 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 2708.3ms TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006
[2021-06-12 21:24:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16286 states.
[2021-06-12 21:24:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16286 to 10284.
[2021-06-12 21:24:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10284 states, 10283 states have (on average 3.355927258582126) internal successors, (34509), 10283 states have internal predecessors, (34509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10284 states to 10284 states and 34509 transitions.
[2021-06-12 21:24:17,793 INFO L78 Accepts]: Start accepts. Automaton has 10284 states and 34509 transitions. Word has length 36
[2021-06-12 21:24:17,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:17,793 INFO L482 AbstractCegarLoop]: Abstraction has 10284 states and 34509 transitions.
[2021-06-12 21:24:17,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:17,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10284 states and 34509 transitions.
[2021-06-12 21:24:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:17,805 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:17,805 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:18,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable776,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:18,006 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -107279183, now seen corresponding path program 97 times
[2021-06-12 21:24:18,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:18,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336600731]
[2021-06-12 21:24:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:18,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:18,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336600731]
[2021-06-12 21:24:18,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336600731] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:18,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567289434]
[2021-06-12 21:24:18,283 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:24:18,306 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:18,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567289434] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:18,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:18,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:24:18,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032082019]
[2021-06-12 21:24:18,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:24:18,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:18,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:24:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:24:18,851 INFO L87 Difference]: Start difference. First operand 10284 states and 34509 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:20,993 INFO L93 Difference]: Finished difference Result 14911 states and 48094 transitions.
[2021-06-12 21:24:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:24:20,993 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:21,014 INFO L225 Difference]: With dead ends: 14911
[2021-06-12 21:24:21,014 INFO L226 Difference]: Without dead ends: 14687
[2021-06-12 21:24:21,015 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 1937.1ms TimeCoverageRelationStatistics Valid=960, Invalid=4892, Unknown=0, NotChecked=0, Total=5852
[2021-06-12 21:24:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14687 states.
[2021-06-12 21:24:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14687 to 10248.
[2021-06-12 21:24:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10248 states, 10247 states have (on average 3.3530789499365667) internal successors, (34359), 10247 states have internal predecessors, (34359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10248 states to 10248 states and 34359 transitions.
[2021-06-12 21:24:21,194 INFO L78 Accepts]: Start accepts. Automaton has 10248 states and 34359 transitions. Word has length 36
[2021-06-12 21:24:21,194 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:21,194 INFO L482 AbstractCegarLoop]: Abstraction has 10248 states and 34359 transitions.
[2021-06-12 21:24:21,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 10248 states and 34359 transitions.
[2021-06-12 21:24:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:21,206 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:21,206 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:21,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable786
[2021-06-12 21:24:21,407 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:21,407 INFO L82 PathProgramCache]: Analyzing trace with hash 681080241, now seen corresponding path program 98 times
[2021-06-12 21:24:21,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:21,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128739434]
[2021-06-12 21:24:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:21,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:21,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128739434]
[2021-06-12 21:24:21,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128739434] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:21,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588753694]
[2021-06-12 21:24:21,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:21,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:24:21,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:21,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:24:21,674 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:22,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588753694] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:22,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:22,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:24:22,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710888487]
[2021-06-12 21:24:22,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:22,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:22,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:22,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1081, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:22,214 INFO L87 Difference]: Start difference. First operand 10248 states and 34359 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:25,559 INFO L93 Difference]: Finished difference Result 16978 states and 54134 transitions.
[2021-06-12 21:24:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2021-06-12 21:24:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:25,584 INFO L225 Difference]: With dead ends: 16978
[2021-06-12 21:24:25,584 INFO L226 Difference]: Without dead ends: 16795
[2021-06-12 21:24:25,585 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 2657.2ms TimeCoverageRelationStatistics Valid=1375, Invalid=6635, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:24:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16795 states.
[2021-06-12 21:24:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16795 to 10223.
[2021-06-12 21:24:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10223 states, 10222 states have (on average 3.352377225591861) internal successors, (34268), 10222 states have internal predecessors, (34268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10223 states to 10223 states and 34268 transitions.
[2021-06-12 21:24:25,798 INFO L78 Accepts]: Start accepts. Automaton has 10223 states and 34268 transitions. Word has length 36
[2021-06-12 21:24:25,798 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:25,798 INFO L482 AbstractCegarLoop]: Abstraction has 10223 states and 34268 transitions.
[2021-06-12 21:24:25,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10223 states and 34268 transitions.
[2021-06-12 21:24:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:25,810 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:25,810 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:26,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable790,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:26,010 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:26,010 INFO L82 PathProgramCache]: Analyzing trace with hash 373150449, now seen corresponding path program 99 times
[2021-06-12 21:24:26,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:26,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249366557]
[2021-06-12 21:24:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:26,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:26,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249366557]
[2021-06-12 21:24:26,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249366557] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:26,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75207042]
[2021-06-12 21:24:26,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:26,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:24:26,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:26,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:24:26,426 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:26,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75207042] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:26,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:26,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:24:26,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105648506]
[2021-06-12 21:24:26,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:24:26,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:26,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:24:26,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:24:26,999 INFO L87 Difference]: Start difference. First operand 10223 states and 34268 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:29,827 INFO L93 Difference]: Finished difference Result 19701 states and 64010 transitions.
[2021-06-12 21:24:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:24:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:29,859 INFO L225 Difference]: With dead ends: 19701
[2021-06-12 21:24:29,859 INFO L226 Difference]: Without dead ends: 19569
[2021-06-12 21:24:29,859 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 2770.2ms TimeCoverageRelationStatistics Valid=1149, Invalid=4703, Unknown=0, NotChecked=0, Total=5852
[2021-06-12 21:24:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19569 states.
[2021-06-12 21:24:30,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19569 to 10248.
[2021-06-12 21:24:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10248 states, 10247 states have (on average 3.351517517322143) internal successors, (34343), 10247 states have internal predecessors, (34343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10248 states to 10248 states and 34343 transitions.
[2021-06-12 21:24:30,074 INFO L78 Accepts]: Start accepts. Automaton has 10248 states and 34343 transitions. Word has length 36
[2021-06-12 21:24:30,074 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:30,074 INFO L482 AbstractCegarLoop]: Abstraction has 10248 states and 34343 transitions.
[2021-06-12 21:24:30,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10248 states and 34343 transitions.
[2021-06-12 21:24:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:30,086 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:30,086 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:30,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable794,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:30,287 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1098187889, now seen corresponding path program 100 times
[2021-06-12 21:24:30,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:30,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851690828]
[2021-06-12 21:24:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:30,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:30,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851690828]
[2021-06-12 21:24:30,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851690828] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:30,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980060638]
[2021-06-12 21:24:30,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:30,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:24:30,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:30,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:24:30,634 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:31,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980060638] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:31,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:31,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:24:31,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987006316]
[2021-06-12 21:24:31,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:24:31,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:24:31,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:24:31,221 INFO L87 Difference]: Start difference. First operand 10248 states and 34343 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:32,690 INFO L93 Difference]: Finished difference Result 13293 states and 43737 transitions.
[2021-06-12 21:24:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:24:32,690 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:32,745 INFO L225 Difference]: With dead ends: 13293
[2021-06-12 21:24:32,745 INFO L226 Difference]: Without dead ends: 13173
[2021-06-12 21:24:32,746 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1516.0ms TimeCoverageRelationStatistics Valid=606, Invalid=2364, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:24:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13173 states.
[2021-06-12 21:24:32,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13173 to 10248.
[2021-06-12 21:24:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10248 states, 10247 states have (on average 3.351517517322143) internal successors, (34343), 10247 states have internal predecessors, (34343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10248 states to 10248 states and 34343 transitions.
[2021-06-12 21:24:32,908 INFO L78 Accepts]: Start accepts. Automaton has 10248 states and 34343 transitions. Word has length 36
[2021-06-12 21:24:32,908 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:32,908 INFO L482 AbstractCegarLoop]: Abstraction has 10248 states and 34343 transitions.
[2021-06-12 21:24:32,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 10248 states and 34343 transitions.
[2021-06-12 21:24:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:32,920 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:32,920 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:33,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable801
[2021-06-12 21:24:33,121 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -474733435, now seen corresponding path program 101 times
[2021-06-12 21:24:33,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:33,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591800294]
[2021-06-12 21:24:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:33,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:33,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591800294]
[2021-06-12 21:24:33,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591800294] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:33,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112869311]
[2021-06-12 21:24:33,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:33,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-12 21:24:33,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:33,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:24:33,373 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:33,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112869311] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:33,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:33,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:24:33,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421557540]
[2021-06-12 21:24:33,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:33,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:33,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:33,857 INFO L87 Difference]: Start difference. First operand 10248 states and 34343 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:36,014 INFO L93 Difference]: Finished difference Result 12340 states and 40402 transitions.
[2021-06-12 21:24:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2021-06-12 21:24:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:36,033 INFO L225 Difference]: With dead ends: 12340
[2021-06-12 21:24:36,033 INFO L226 Difference]: Without dead ends: 12087
[2021-06-12 21:24:36,033 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1793.1ms TimeCoverageRelationStatistics Valid=802, Invalid=4028, Unknown=0, NotChecked=0, Total=4830
[2021-06-12 21:24:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states.
[2021-06-12 21:24:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 10443.
[2021-06-12 21:24:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 10442 states have (on average 3.348209155334227) internal successors, (34962), 10442 states have internal predecessors, (34962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 34962 transitions.
[2021-06-12 21:24:36,218 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 34962 transitions. Word has length 36
[2021-06-12 21:24:36,218 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:36,218 INFO L482 AbstractCegarLoop]: Abstraction has 10443 states and 34962 transitions.
[2021-06-12 21:24:36,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 34962 transitions.
[2021-06-12 21:24:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:36,232 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:36,232 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:36,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable808,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:36,441 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:36,441 INFO L82 PathProgramCache]: Analyzing trace with hash 313625989, now seen corresponding path program 102 times
[2021-06-12 21:24:36,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:36,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313985482]
[2021-06-12 21:24:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:36,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:36,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313985482]
[2021-06-12 21:24:36,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313985482] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:36,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680477479]
[2021-06-12 21:24:36,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:36,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:24:36,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:36,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:24:36,696 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:37,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680477479] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:37,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:37,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:24:37,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13297908]
[2021-06-12 21:24:37,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:24:37,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:24:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:24:37,207 INFO L87 Difference]: Start difference. First operand 10443 states and 34962 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:39,910 INFO L93 Difference]: Finished difference Result 15152 states and 48858 transitions.
[2021-06-12 21:24:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2021-06-12 21:24:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:39,937 INFO L225 Difference]: With dead ends: 15152
[2021-06-12 21:24:39,938 INFO L226 Difference]: Without dead ends: 14954
[2021-06-12 21:24:39,938 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 2337.2ms TimeCoverageRelationStatistics Valid=1076, Invalid=5244, Unknown=0, NotChecked=0, Total=6320
[2021-06-12 21:24:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14954 states.
[2021-06-12 21:24:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14954 to 10436.
[2021-06-12 21:24:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10436 states, 10435 states have (on average 3.3470052707235265) internal successors, (34926), 10435 states have internal predecessors, (34926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10436 states to 10436 states and 34926 transitions.
[2021-06-12 21:24:40,201 INFO L78 Accepts]: Start accepts. Automaton has 10436 states and 34926 transitions. Word has length 36
[2021-06-12 21:24:40,201 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:40,201 INFO L482 AbstractCegarLoop]: Abstraction has 10436 states and 34926 transitions.
[2021-06-12 21:24:40,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10436 states and 34926 transitions.
[2021-06-12 21:24:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:40,214 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:40,214 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:40,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable810
[2021-06-12 21:24:40,433 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1715907027, now seen corresponding path program 103 times
[2021-06-12 21:24:40,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:40,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990098126]
[2021-06-12 21:24:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:40,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:40,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990098126]
[2021-06-12 21:24:40,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990098126] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:40,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40714063]
[2021-06-12 21:24:40,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:40,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:24:40,694 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:41,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40714063] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:41,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:41,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:24:41,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326030165]
[2021-06-12 21:24:41,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:41,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:41,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:41,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1090, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:41,215 INFO L87 Difference]: Start difference. First operand 10436 states and 34926 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:43,906 INFO L93 Difference]: Finished difference Result 15709 states and 50648 transitions.
[2021-06-12 21:24:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2021-06-12 21:24:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:43,929 INFO L225 Difference]: With dead ends: 15709
[2021-06-12 21:24:43,930 INFO L226 Difference]: Without dead ends: 15507
[2021-06-12 21:24:43,930 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 2264.0ms TimeCoverageRelationStatistics Valid=1127, Invalid=5035, Unknown=0, NotChecked=0, Total=6162
[2021-06-12 21:24:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15507 states.
[2021-06-12 21:24:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15507 to 10431.
[2021-06-12 21:24:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 3.3465004793863855) internal successors, (34904), 10430 states have internal predecessors, (34904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 34904 transitions.
[2021-06-12 21:24:44,124 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 34904 transitions. Word has length 36
[2021-06-12 21:24:44,124 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:44,124 INFO L482 AbstractCegarLoop]: Abstraction has 10431 states and 34904 transitions.
[2021-06-12 21:24:44,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 34904 transitions.
[2021-06-12 21:24:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:44,136 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:44,136 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:44,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable814,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:44,337 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1183400649, now seen corresponding path program 104 times
[2021-06-12 21:24:44,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:44,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346722672]
[2021-06-12 21:24:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:44,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:44,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346722672]
[2021-06-12 21:24:44,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346722672] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:44,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334202255]
[2021-06-12 21:24:44,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:44,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:24:44,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:44,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:24:44,626 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:45,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334202255] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:45,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:45,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:24:45,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857573142]
[2021-06-12 21:24:45,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:24:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:45,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:24:45,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:24:45,145 INFO L87 Difference]: Start difference. First operand 10431 states and 34904 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:46,643 INFO L93 Difference]: Finished difference Result 11925 states and 39225 transitions.
[2021-06-12 21:24:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2021-06-12 21:24:46,644 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:46,661 INFO L225 Difference]: With dead ends: 11925
[2021-06-12 21:24:46,661 INFO L226 Difference]: Without dead ends: 11732
[2021-06-12 21:24:46,662 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1361.6ms TimeCoverageRelationStatistics Valid=455, Invalid=2515, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:24:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11732 states.
[2021-06-12 21:24:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11732 to 10442.
[2021-06-12 21:24:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 3.3473805191073653) internal successors, (34950), 10441 states have internal predecessors, (34950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 34950 transitions.
[2021-06-12 21:24:46,836 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 34950 transitions. Word has length 36
[2021-06-12 21:24:46,836 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:46,836 INFO L482 AbstractCegarLoop]: Abstraction has 10442 states and 34950 transitions.
[2021-06-12 21:24:46,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 34950 transitions.
[2021-06-12 21:24:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:46,848 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:46,849 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:47,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable818,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:47,059 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:47,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2135673005, now seen corresponding path program 105 times
[2021-06-12 21:24:47,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:47,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793199554]
[2021-06-12 21:24:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:47,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793199554]
[2021-06-12 21:24:47,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793199554] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041468255]
[2021-06-12 21:24:47,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:47,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2021-06-12 21:24:47,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:47,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:24:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:47,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041468255] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:47,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:47,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:24:47,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300578043]
[2021-06-12 21:24:47,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:24:47,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:47,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:24:47,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:24:47,842 INFO L87 Difference]: Start difference. First operand 10442 states and 34950 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:49,259 INFO L93 Difference]: Finished difference Result 17441 states and 57200 transitions.
[2021-06-12 21:24:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:24:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:49,287 INFO L225 Difference]: With dead ends: 17441
[2021-06-12 21:24:49,287 INFO L226 Difference]: Without dead ends: 17361
[2021-06-12 21:24:49,288 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1234.5ms TimeCoverageRelationStatistics Valid=543, Invalid=2213, Unknown=0, NotChecked=0, Total=2756
[2021-06-12 21:24:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17361 states.
[2021-06-12 21:24:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17361 to 10505.
[2021-06-12 21:24:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 10504 states have (on average 3.3493907083015992) internal successors, (35182), 10504 states have internal predecessors, (35182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 35182 transitions.
[2021-06-12 21:24:49,526 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 35182 transitions. Word has length 36
[2021-06-12 21:24:49,527 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:49,527 INFO L482 AbstractCegarLoop]: Abstraction has 10505 states and 35182 transitions.
[2021-06-12 21:24:49,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 35182 transitions.
[2021-06-12 21:24:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:49,539 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:49,539 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:49,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable823
[2021-06-12 21:24:49,739 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:49,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1748517121, now seen corresponding path program 106 times
[2021-06-12 21:24:49,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:49,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369971876]
[2021-06-12 21:24:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:49,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:49,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369971876]
[2021-06-12 21:24:49,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369971876] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:49,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359535083]
[2021-06-12 21:24:49,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:49,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:24:49,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:49,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:24:49,989 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:50,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359535083] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:50,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:50,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:24:50,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578844837]
[2021-06-12 21:24:50,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:24:50,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:50,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:24:50,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:24:50,594 INFO L87 Difference]: Start difference. First operand 10505 states and 35182 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:52,518 INFO L93 Difference]: Finished difference Result 16337 states and 53642 transitions.
[2021-06-12 21:24:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:24:52,519 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:52,549 INFO L225 Difference]: With dead ends: 16337
[2021-06-12 21:24:52,549 INFO L226 Difference]: Without dead ends: 16257
[2021-06-12 21:24:52,549 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1636.9ms TimeCoverageRelationStatistics Valid=680, Invalid=2980, Unknown=0, NotChecked=0, Total=3660
[2021-06-12 21:24:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16257 states.
[2021-06-12 21:24:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16257 to 10503.
[2021-06-12 21:24:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10503 states, 10502 states have (on average 3.3494572462388117) internal successors, (35176), 10502 states have internal predecessors, (35176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10503 states to 10503 states and 35176 transitions.
[2021-06-12 21:24:52,773 INFO L78 Accepts]: Start accepts. Automaton has 10503 states and 35176 transitions. Word has length 36
[2021-06-12 21:24:52,773 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:52,773 INFO L482 AbstractCegarLoop]: Abstraction has 10503 states and 35176 transitions.
[2021-06-12 21:24:52,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 10503 states and 35176 transitions.
[2021-06-12 21:24:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:52,786 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:52,786 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:52,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable837,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:52,988 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:52,988 INFO L82 PathProgramCache]: Analyzing trace with hash 348934589, now seen corresponding path program 107 times
[2021-06-12 21:24:52,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:52,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113655753]
[2021-06-12 21:24:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:53,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:53,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113655753]
[2021-06-12 21:24:53,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113655753] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:53,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009650478]
[2021-06-12 21:24:53,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:53,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:24:53,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:53,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-06-12 21:24:53,340 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:53,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009650478] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:53,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:53,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:24:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099862284]
[2021-06-12 21:24:53,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:24:53,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:53,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:24:53,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:24:53,921 INFO L87 Difference]: Start difference. First operand 10503 states and 35176 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:24:57,122 INFO L93 Difference]: Finished difference Result 15891 states and 51516 transitions.
[2021-06-12 21:24:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2021-06-12 21:24:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:24:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:24:57,146 INFO L225 Difference]: With dead ends: 15891
[2021-06-12 21:24:57,146 INFO L226 Difference]: Without dead ends: 15790
[2021-06-12 21:24:57,147 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2062 ImplicationChecksByTransitivity, 2737.2ms TimeCoverageRelationStatistics Valid=1124, Invalid=5682, Unknown=0, NotChecked=0, Total=6806
[2021-06-12 21:24:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15790 states.
[2021-06-12 21:24:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15790 to 10597.
[2021-06-12 21:24:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10597 states, 10596 states have (on average 3.349754624386561) internal successors, (35494), 10596 states have internal predecessors, (35494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10597 states to 10597 states and 35494 transitions.
[2021-06-12 21:24:57,345 INFO L78 Accepts]: Start accepts. Automaton has 10597 states and 35494 transitions. Word has length 36
[2021-06-12 21:24:57,345 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:24:57,345 INFO L482 AbstractCegarLoop]: Abstraction has 10597 states and 35494 transitions.
[2021-06-12 21:24:57,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:24:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10597 states and 35494 transitions.
[2021-06-12 21:24:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:24:57,358 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:24:57,358 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:24:57,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable851,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:57,558 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:24:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:24:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1740189507, now seen corresponding path program 108 times
[2021-06-12 21:24:57,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:24:57,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738646607]
[2021-06-12 21:24:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:24:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:24:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:57,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:24:57,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738646607]
[2021-06-12 21:24:57,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738646607] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:57,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984529420]
[2021-06-12 21:24:57,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:24:57,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:24:57,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:24:57,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:24:57,841 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:24:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:24:58,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984529420] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:24:58,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:24:58,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:24:58,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583081942]
[2021-06-12 21:24:58,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:24:58,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:24:58,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:24:58,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1058, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:24:58,351 INFO L87 Difference]: Start difference. First operand 10597 states and 35494 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:01,816 INFO L93 Difference]: Finished difference Result 19422 states and 61842 transitions.
[2021-06-12 21:25:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2021-06-12 21:25:01,817 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:01,850 INFO L225 Difference]: With dead ends: 19422
[2021-06-12 21:25:01,850 INFO L226 Difference]: Without dead ends: 19250
[2021-06-12 21:25:01,851 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 2789.1ms TimeCoverageRelationStatistics Valid=1438, Invalid=6572, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:25:01,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19250 states.
[2021-06-12 21:25:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19250 to 10563.
[2021-06-12 21:25:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10563 states, 10562 states have (on average 3.347661427759894) internal successors, (35358), 10562 states have internal predecessors, (35358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10563 states to 10563 states and 35358 transitions.
[2021-06-12 21:25:02,114 INFO L78 Accepts]: Start accepts. Automaton has 10563 states and 35358 transitions. Word has length 36
[2021-06-12 21:25:02,114 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:02,114 INFO L482 AbstractCegarLoop]: Abstraction has 10563 states and 35358 transitions.
[2021-06-12 21:25:02,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:02,115 INFO L276 IsEmpty]: Start isEmpty. Operand 10563 states and 35358 transitions.
[2021-06-12 21:25:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:02,127 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:02,127 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:02,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable855
[2021-06-12 21:25:02,328 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:02,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1557849495, now seen corresponding path program 109 times
[2021-06-12 21:25:02,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:02,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295630837]
[2021-06-12 21:25:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:02,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:02,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295630837]
[2021-06-12 21:25:02,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295630837] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:02,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897801052]
[2021-06-12 21:25:02,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:02,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:25:02,718 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:03,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897801052] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:03,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:03,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:25:03,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612215009]
[2021-06-12 21:25:03,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:25:03,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:25:03,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:25:03,388 INFO L87 Difference]: Start difference. First operand 10563 states and 35358 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:06,420 INFO L93 Difference]: Finished difference Result 15911 states and 51486 transitions.
[2021-06-12 21:25:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:25:06,421 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:06,447 INFO L225 Difference]: With dead ends: 15911
[2021-06-12 21:25:06,447 INFO L226 Difference]: Without dead ends: 15779
[2021-06-12 21:25:06,447 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 2515.8ms TimeCoverageRelationStatistics Valid=1006, Invalid=4846, Unknown=0, NotChecked=0, Total=5852
[2021-06-12 21:25:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15779 states.
[2021-06-12 21:25:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15779 to 10589.
[2021-06-12 21:25:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10589 states, 10588 states have (on average 3.3488855307895733) internal successors, (35458), 10588 states have internal predecessors, (35458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 35458 transitions.
[2021-06-12 21:25:06,650 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 35458 transitions. Word has length 36
[2021-06-12 21:25:06,650 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:06,650 INFO L482 AbstractCegarLoop]: Abstraction has 10589 states and 35458 transitions.
[2021-06-12 21:25:06,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 35458 transitions.
[2021-06-12 21:25:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:06,663 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:06,663 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:06,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable859,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:06,877 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:06,877 INFO L82 PathProgramCache]: Analyzing trace with hash 647993705, now seen corresponding path program 110 times
[2021-06-12 21:25:06,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:06,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961810098]
[2021-06-12 21:25:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:07,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:07,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961810098]
[2021-06-12 21:25:07,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961810098] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:07,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597723773]
[2021-06-12 21:25:07,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:07,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:25:07,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:07,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:25:07,205 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:07,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597723773] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:07,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:07,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:25:07,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276759000]
[2021-06-12 21:25:07,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:25:07,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:07,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:25:07,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:25:07,738 INFO L87 Difference]: Start difference. First operand 10589 states and 35458 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:11,730 INFO L93 Difference]: Finished difference Result 19441 states and 61873 transitions.
[2021-06-12 21:25:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2021-06-12 21:25:11,732 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:11,763 INFO L225 Difference]: With dead ends: 19441
[2021-06-12 21:25:11,763 INFO L226 Difference]: Without dead ends: 19269
[2021-06-12 21:25:11,764 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 2995.0ms TimeCoverageRelationStatistics Valid=1490, Invalid=6882, Unknown=0, NotChecked=0, Total=8372
[2021-06-12 21:25:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19269 states.
[2021-06-12 21:25:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19269 to 10555.
[2021-06-12 21:25:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10555 states, 10554 states have (on average 3.3471669509190827) internal successors, (35326), 10554 states have internal predecessors, (35326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10555 states to 10555 states and 35326 transitions.
[2021-06-12 21:25:12,074 INFO L78 Accepts]: Start accepts. Automaton has 10555 states and 35326 transitions. Word has length 36
[2021-06-12 21:25:12,074 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:12,074 INFO L482 AbstractCegarLoop]: Abstraction has 10555 states and 35326 transitions.
[2021-06-12 21:25:12,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 10555 states and 35326 transitions.
[2021-06-12 21:25:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:12,087 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:12,087 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:12,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable869
[2021-06-12 21:25:12,288 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:12,288 INFO L82 PathProgramCache]: Analyzing trace with hash 278308525, now seen corresponding path program 111 times
[2021-06-12 21:25:12,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:12,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138425278]
[2021-06-12 21:25:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:12,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:12,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138425278]
[2021-06-12 21:25:12,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138425278] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:12,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25446306]
[2021-06-12 21:25:12,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:12,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:25:12,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:12,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:25:12,669 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:13,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25446306] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:13,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:13,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:25:13,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219768494]
[2021-06-12 21:25:13,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:25:13,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:13,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:25:13,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:25:13,280 INFO L87 Difference]: Start difference. First operand 10555 states and 35326 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:16,366 INFO L93 Difference]: Finished difference Result 15745 states and 51052 transitions.
[2021-06-12 21:25:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2021-06-12 21:25:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:16,391 INFO L225 Difference]: With dead ends: 15745
[2021-06-12 21:25:16,392 INFO L226 Difference]: Without dead ends: 15613
[2021-06-12 21:25:16,392 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2757.3ms TimeCoverageRelationStatistics Valid=1109, Invalid=5371, Unknown=0, NotChecked=0, Total=6480
[2021-06-12 21:25:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15613 states.
[2021-06-12 21:25:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15613 to 10573.
[2021-06-12 21:25:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10573 states, 10572 states have (on average 3.3469542186908816) internal successors, (35384), 10572 states have internal predecessors, (35384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 35384 transitions.
[2021-06-12 21:25:16,600 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 35384 transitions. Word has length 36
[2021-06-12 21:25:16,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:16,601 INFO L482 AbstractCegarLoop]: Abstraction has 10573 states and 35384 transitions.
[2021-06-12 21:25:16,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:16,601 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 35384 transitions.
[2021-06-12 21:25:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:16,614 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:16,614 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:16,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable873
[2021-06-12 21:25:16,825 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1810815571, now seen corresponding path program 112 times
[2021-06-12 21:25:16,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:16,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792581627]
[2021-06-12 21:25:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:17,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:17,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792581627]
[2021-06-12 21:25:17,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792581627] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:17,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533580747]
[2021-06-12 21:25:17,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:17,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:25:17,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:17,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:25:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:17,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533580747] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:17,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:17,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:25:17,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349446415]
[2021-06-12 21:25:17,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:25:17,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:17,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:25:17,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:25:17,707 INFO L87 Difference]: Start difference. First operand 10573 states and 35384 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:21,606 INFO L93 Difference]: Finished difference Result 19005 states and 60520 transitions.
[2021-06-12 21:25:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2021-06-12 21:25:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:21,633 INFO L225 Difference]: With dead ends: 19005
[2021-06-12 21:25:21,633 INFO L226 Difference]: Without dead ends: 18833
[2021-06-12 21:25:21,634 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3208 ImplicationChecksByTransitivity, 3394.6ms TimeCoverageRelationStatistics Valid=1671, Invalid=8229, Unknown=0, NotChecked=0, Total=9900
[2021-06-12 21:25:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18833 states.
[2021-06-12 21:25:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18833 to 10507.
[2021-06-12 21:25:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10507 states, 10506 states have (on average 3.3436131734247097) internal successors, (35128), 10506 states have internal predecessors, (35128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10507 states to 10507 states and 35128 transitions.
[2021-06-12 21:25:21,857 INFO L78 Accepts]: Start accepts. Automaton has 10507 states and 35128 transitions. Word has length 36
[2021-06-12 21:25:21,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:21,857 INFO L482 AbstractCegarLoop]: Abstraction has 10507 states and 35128 transitions.
[2021-06-12 21:25:21,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10507 states and 35128 transitions.
[2021-06-12 21:25:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:21,870 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:21,870 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:22,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable880
[2021-06-12 21:25:22,070 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:22,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1127965129, now seen corresponding path program 113 times
[2021-06-12 21:25:22,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:22,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521096507]
[2021-06-12 21:25:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:22,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:22,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521096507]
[2021-06-12 21:25:22,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521096507] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:22,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396889699]
[2021-06-12 21:25:22,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:22,405 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:25:22,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:22,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:25:22,407 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:23,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396889699] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:23,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:23,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:25:23,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201643605]
[2021-06-12 21:25:23,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:25:23,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:23,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:25:23,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:25:23,036 INFO L87 Difference]: Start difference. First operand 10507 states and 35128 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:24,553 INFO L93 Difference]: Finished difference Result 12415 states and 40881 transitions.
[2021-06-12 21:25:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:25:24,553 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:24,574 INFO L225 Difference]: With dead ends: 12415
[2021-06-12 21:25:24,574 INFO L226 Difference]: Without dead ends: 12317
[2021-06-12 21:25:24,574 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1551.5ms TimeCoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:25:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12317 states.
[2021-06-12 21:25:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12317 to 10543.
[2021-06-12 21:25:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10543 states, 10542 states have (on average 3.34357806867767) internal successors, (35248), 10542 states have internal predecessors, (35248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:24,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10543 states to 10543 states and 35248 transitions.
[2021-06-12 21:25:24,788 INFO L78 Accepts]: Start accepts. Automaton has 10543 states and 35248 transitions. Word has length 36
[2021-06-12 21:25:24,788 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:24,788 INFO L482 AbstractCegarLoop]: Abstraction has 10543 states and 35248 transitions.
[2021-06-12 21:25:24,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:24,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10543 states and 35248 transitions.
[2021-06-12 21:25:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:24,801 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:24,801 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:25,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable884
[2021-06-12 21:25:25,002 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2049667269, now seen corresponding path program 114 times
[2021-06-12 21:25:25,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:25,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482482934]
[2021-06-12 21:25:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:25,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:25,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482482934]
[2021-06-12 21:25:25,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482482934] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:25,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959745886]
[2021-06-12 21:25:25,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:25,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:25:25,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:25:25,280 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:25,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959745886] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:25,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:25,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:25:25,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608317752]
[2021-06-12 21:25:25,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:25:25,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:25,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:25:25,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:25:25,841 INFO L87 Difference]: Start difference. First operand 10543 states and 35248 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:27,221 INFO L93 Difference]: Finished difference Result 13178 states and 43112 transitions.
[2021-06-12 21:25:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-06-12 21:25:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:27,240 INFO L225 Difference]: With dead ends: 13178
[2021-06-12 21:25:27,240 INFO L226 Difference]: Without dead ends: 13046
[2021-06-12 21:25:27,240 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1265.0ms TimeCoverageRelationStatistics Valid=523, Invalid=1927, Unknown=0, NotChecked=0, Total=2450
[2021-06-12 21:25:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13046 states.
[2021-06-12 21:25:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13046 to 10533.
[2021-06-12 21:25:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 10532 states have (on average 3.343334599316369) internal successors, (35212), 10532 states have internal predecessors, (35212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 35212 transitions.
[2021-06-12 21:25:27,415 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 35212 transitions. Word has length 36
[2021-06-12 21:25:27,415 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:27,415 INFO L482 AbstractCegarLoop]: Abstraction has 10533 states and 35212 transitions.
[2021-06-12 21:25:27,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 35212 transitions.
[2021-06-12 21:25:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:27,428 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:27,428 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:27,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable888
[2021-06-12 21:25:27,629 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:27,629 INFO L82 PathProgramCache]: Analyzing trace with hash 789627593, now seen corresponding path program 115 times
[2021-06-12 21:25:27,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:27,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337537786]
[2021-06-12 21:25:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:27,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:27,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337537786]
[2021-06-12 21:25:27,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337537786] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:27,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878261691]
[2021-06-12 21:25:27,886 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:27,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:25:27,909 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:28,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878261691] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:28,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:28,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:25:28,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3848070]
[2021-06-12 21:25:28,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:25:28,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:28,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:25:28,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:25:28,439 INFO L87 Difference]: Start difference. First operand 10533 states and 35212 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:29,742 INFO L93 Difference]: Finished difference Result 11908 states and 39154 transitions.
[2021-06-12 21:25:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:25:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:29,759 INFO L225 Difference]: With dead ends: 11908
[2021-06-12 21:25:29,759 INFO L226 Difference]: Without dead ends: 11743
[2021-06-12 21:25:29,759 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1193.9ms TimeCoverageRelationStatistics Valid=443, Invalid=2313, Unknown=0, NotChecked=0, Total=2756
[2021-06-12 21:25:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11743 states.
[2021-06-12 21:25:29,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 10533.
[2021-06-12 21:25:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 10532 states have (on average 3.343334599316369) internal successors, (35212), 10532 states have internal predecessors, (35212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 35212 transitions.
[2021-06-12 21:25:29,927 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 35212 transitions. Word has length 36
[2021-06-12 21:25:29,927 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:29,927 INFO L482 AbstractCegarLoop]: Abstraction has 10533 states and 35212 transitions.
[2021-06-12 21:25:29,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 35212 transitions.
[2021-06-12 21:25:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:29,939 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:29,939 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:30,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable895,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:30,141 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash -285259715, now seen corresponding path program 116 times
[2021-06-12 21:25:30,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:30,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498952013]
[2021-06-12 21:25:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:30,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:30,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498952013]
[2021-06-12 21:25:30,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498952013] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:30,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537333888]
[2021-06-12 21:25:30,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:30,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:25:30,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:30,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:25:30,497 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:31,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537333888] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:31,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:31,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:25:31,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791063670]
[2021-06-12 21:25:31,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:25:31,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:31,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:25:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:25:31,154 INFO L87 Difference]: Start difference. First operand 10533 states and 35212 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:34,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:34,902 INFO L93 Difference]: Finished difference Result 17393 states and 55767 transitions.
[2021-06-12 21:25:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2021-06-12 21:25:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:34,928 INFO L225 Difference]: With dead ends: 17393
[2021-06-12 21:25:34,928 INFO L226 Difference]: Without dead ends: 17267
[2021-06-12 21:25:34,929 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 3014.7ms TimeCoverageRelationStatistics Valid=1027, Invalid=5945, Unknown=0, NotChecked=0, Total=6972
[2021-06-12 21:25:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17267 states.
[2021-06-12 21:25:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17267 to 10528.
[2021-06-12 21:25:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 10527 states have (on average 3.3423577467464614) internal successors, (35185), 10527 states have internal predecessors, (35185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 35185 transitions.
[2021-06-12 21:25:35,170 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 35185 transitions. Word has length 36
[2021-06-12 21:25:35,171 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:35,171 INFO L482 AbstractCegarLoop]: Abstraction has 10528 states and 35185 transitions.
[2021-06-12 21:25:35,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 35185 transitions.
[2021-06-12 21:25:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:35,183 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:35,183 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:35,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable900,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:35,389 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash 589449021, now seen corresponding path program 117 times
[2021-06-12 21:25:35,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:35,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453555572]
[2021-06-12 21:25:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:35,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:35,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453555572]
[2021-06-12 21:25:35,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453555572] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:35,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835845256]
[2021-06-12 21:25:35,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:35,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:25:35,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:35,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:25:35,752 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:36,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835845256] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:36,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:36,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:25:36,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219646361]
[2021-06-12 21:25:36,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:25:36,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:36,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:25:36,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:25:36,333 INFO L87 Difference]: Start difference. First operand 10528 states and 35185 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:39,664 INFO L93 Difference]: Finished difference Result 16941 states and 54280 transitions.
[2021-06-12 21:25:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2021-06-12 21:25:39,665 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:39,691 INFO L225 Difference]: With dead ends: 16941
[2021-06-12 21:25:39,691 INFO L226 Difference]: Without dead ends: 16821
[2021-06-12 21:25:39,692 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 2764.0ms TimeCoverageRelationStatistics Valid=913, Invalid=5567, Unknown=0, NotChecked=0, Total=6480
[2021-06-12 21:25:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16821 states.
[2021-06-12 21:25:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16821 to 10530.
[2021-06-12 21:25:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10530 states, 10529 states have (on average 3.3424826669199352) internal successors, (35193), 10529 states have internal predecessors, (35193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10530 states to 10530 states and 35193 transitions.
[2021-06-12 21:25:39,911 INFO L78 Accepts]: Start accepts. Automaton has 10530 states and 35193 transitions. Word has length 36
[2021-06-12 21:25:39,911 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:39,911 INFO L482 AbstractCegarLoop]: Abstraction has 10530 states and 35193 transitions.
[2021-06-12 21:25:39,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 10530 states and 35193 transitions.
[2021-06-12 21:25:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:39,924 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:39,924 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:40,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable911,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:40,124 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2077724221, now seen corresponding path program 118 times
[2021-06-12 21:25:40,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:40,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575613149]
[2021-06-12 21:25:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:40,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:40,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575613149]
[2021-06-12 21:25:40,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575613149] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:40,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921864510]
[2021-06-12 21:25:40,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:40,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:25:40,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:40,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:25:40,405 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:41,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921864510] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:41,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:41,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:25:41,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027344910]
[2021-06-12 21:25:41,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:25:41,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:25:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:25:41,008 INFO L87 Difference]: Start difference. First operand 10530 states and 35193 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:45,123 INFO L93 Difference]: Finished difference Result 17822 states and 56788 transitions.
[2021-06-12 21:25:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2021-06-12 21:25:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:45,148 INFO L225 Difference]: With dead ends: 17822
[2021-06-12 21:25:45,149 INFO L226 Difference]: Without dead ends: 17612
[2021-06-12 21:25:45,149 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3267 ImplicationChecksByTransitivity, 2981.3ms TimeCoverageRelationStatistics Valid=1241, Invalid=8659, Unknown=0, NotChecked=0, Total=9900
[2021-06-12 21:25:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17612 states.
[2021-06-12 21:25:45,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 10530.
[2021-06-12 21:25:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10530 states, 10529 states have (on average 3.342102763795232) internal successors, (35189), 10529 states have internal predecessors, (35189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10530 states to 10530 states and 35189 transitions.
[2021-06-12 21:25:45,346 INFO L78 Accepts]: Start accepts. Automaton has 10530 states and 35189 transitions. Word has length 36
[2021-06-12 21:25:45,346 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:45,346 INFO L482 AbstractCegarLoop]: Abstraction has 10530 states and 35189 transitions.
[2021-06-12 21:25:45,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10530 states and 35189 transitions.
[2021-06-12 21:25:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:45,358 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:45,358 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:45,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable921
[2021-06-12 21:25:45,558 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1499675075, now seen corresponding path program 119 times
[2021-06-12 21:25:45,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:45,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402471664]
[2021-06-12 21:25:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:45,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:45,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402471664]
[2021-06-12 21:25:45,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402471664] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:45,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498559276]
[2021-06-12 21:25:45,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:45,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:25:45,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:45,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:25:45,816 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:46,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498559276] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:46,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:46,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:25:46,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363009721]
[2021-06-12 21:25:46,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:25:46,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:25:46,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:25:46,411 INFO L87 Difference]: Start difference. First operand 10530 states and 35189 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:50,980 INFO L93 Difference]: Finished difference Result 20309 states and 64379 transitions.
[2021-06-12 21:25:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states.
[2021-06-12 21:25:50,980 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:51,010 INFO L225 Difference]: With dead ends: 20309
[2021-06-12 21:25:51,010 INFO L226 Difference]: Without dead ends: 20119
[2021-06-12 21:25:51,011 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3400 ImplicationChecksByTransitivity, 3511.1ms TimeCoverageRelationStatistics Valid=1520, Invalid=8782, Unknown=0, NotChecked=0, Total=10302
[2021-06-12 21:25:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20119 states.
[2021-06-12 21:25:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20119 to 10452.
[2021-06-12 21:25:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10452 states, 10451 states have (on average 3.3371926131470673) internal successors, (34877), 10451 states have internal predecessors, (34877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10452 states to 10452 states and 34877 transitions.
[2021-06-12 21:25:51,259 INFO L78 Accepts]: Start accepts. Automaton has 10452 states and 34877 transitions. Word has length 36
[2021-06-12 21:25:51,260 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:51,260 INFO L482 AbstractCegarLoop]: Abstraction has 10452 states and 34877 transitions.
[2021-06-12 21:25:51,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10452 states and 34877 transitions.
[2021-06-12 21:25:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:51,272 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:51,272 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:51,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable925
[2021-06-12 21:25:51,473 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -181508519, now seen corresponding path program 120 times
[2021-06-12 21:25:51,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:51,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535818192]
[2021-06-12 21:25:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:51,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:51,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535818192]
[2021-06-12 21:25:51,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535818192] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:51,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934663285]
[2021-06-12 21:25:51,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:51,822 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:25:51,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:25:51,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:25:51,823 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:52,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934663285] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:52,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:52,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:25:52,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30248625]
[2021-06-12 21:25:52,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:25:52,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:25:52,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:25:52,504 INFO L87 Difference]: Start difference. First operand 10452 states and 34877 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:54,390 INFO L93 Difference]: Finished difference Result 12144 states and 39477 transitions.
[2021-06-12 21:25:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-06-12 21:25:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:54,408 INFO L225 Difference]: With dead ends: 12144
[2021-06-12 21:25:54,409 INFO L226 Difference]: Without dead ends: 12030
[2021-06-12 21:25:54,409 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1779.0ms TimeCoverageRelationStatistics Valid=417, Invalid=2775, Unknown=0, NotChecked=0, Total=3192
[2021-06-12 21:25:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12030 states.
[2021-06-12 21:25:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12030 to 10658.
[2021-06-12 21:25:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10658 states, 10657 states have (on average 3.337993806887492) internal successors, (35573), 10657 states have internal predecessors, (35573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 35573 transitions.
[2021-06-12 21:25:54,583 INFO L78 Accepts]: Start accepts. Automaton has 10658 states and 35573 transitions. Word has length 36
[2021-06-12 21:25:54,583 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:54,583 INFO L482 AbstractCegarLoop]: Abstraction has 10658 states and 35573 transitions.
[2021-06-12 21:25:54,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 35573 transitions.
[2021-06-12 21:25:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:54,595 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:54,595 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:25:54,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable929,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:54,796 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:25:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:25:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash -416903851, now seen corresponding path program 121 times
[2021-06-12 21:25:54,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:25:54,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528766502]
[2021-06-12 21:25:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:25:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:55,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:25:55,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528766502]
[2021-06-12 21:25:55,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528766502] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:55,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382310043]
[2021-06-12 21:25:55,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:25:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:25:55,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:25:55,143 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:25:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:25:55,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382310043] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:25:55,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:25:55,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:25:55,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254211114]
[2021-06-12 21:25:55,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:25:55,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:25:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:25:55,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:25:55,925 INFO L87 Difference]: Start difference. First operand 10658 states and 35573 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:25:59,557 INFO L93 Difference]: Finished difference Result 17179 states and 55018 transitions.
[2021-06-12 21:25:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2021-06-12 21:25:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:25:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:25:59,583 INFO L225 Difference]: With dead ends: 17179
[2021-06-12 21:25:59,583 INFO L226 Difference]: Without dead ends: 17051
[2021-06-12 21:25:59,583 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 3270.8ms TimeCoverageRelationStatistics Valid=1305, Invalid=6705, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:25:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17051 states.
[2021-06-12 21:25:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17051 to 10821.
[2021-06-12 21:25:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10821 states, 10820 states have (on average 3.340018484288355) internal successors, (36139), 10820 states have internal predecessors, (36139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10821 states to 10821 states and 36139 transitions.
[2021-06-12 21:25:59,788 INFO L78 Accepts]: Start accepts. Automaton has 10821 states and 36139 transitions. Word has length 36
[2021-06-12 21:25:59,788 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:25:59,788 INFO L482 AbstractCegarLoop]: Abstraction has 10821 states and 36139 transitions.
[2021-06-12 21:25:59,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:25:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10821 states and 36139 transitions.
[2021-06-12 21:25:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:25:59,800 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:25:59,801 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:00,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable940,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:00,002 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:00,002 INFO L82 PathProgramCache]: Analyzing trace with hash 300664149, now seen corresponding path program 122 times
[2021-06-12 21:26:00,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:00,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326207647]
[2021-06-12 21:26:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:00,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:00,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326207647]
[2021-06-12 21:26:00,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326207647] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:00,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755854311]
[2021-06-12 21:26:00,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:00,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:26:00,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:00,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:26:00,354 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:01,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755854311] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:01,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:01,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35
[2021-06-12 21:26:01,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543633138]
[2021-06-12 21:26:01,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:26:01,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:01,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:26:01,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:26:01,127 INFO L87 Difference]: Start difference. First operand 10821 states and 36139 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:04,950 INFO L93 Difference]: Finished difference Result 19269 states and 61375 transitions.
[2021-06-12 21:26:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2021-06-12 21:26:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:04,979 INFO L225 Difference]: With dead ends: 19269
[2021-06-12 21:26:04,979 INFO L226 Difference]: Without dead ends: 19100
[2021-06-12 21:26:04,980 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 3363.1ms TimeCoverageRelationStatistics Valid=1427, Invalid=6229, Unknown=0, NotChecked=0, Total=7656
[2021-06-12 21:26:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19100 states.
[2021-06-12 21:26:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19100 to 10812.
[2021-06-12 21:26:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10812 states, 10811 states have (on average 3.339654056054019) internal successors, (36105), 10811 states have internal predecessors, (36105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10812 states to 10812 states and 36105 transitions.
[2021-06-12 21:26:05,224 INFO L78 Accepts]: Start accepts. Automaton has 10812 states and 36105 transitions. Word has length 36
[2021-06-12 21:26:05,224 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:05,224 INFO L482 AbstractCegarLoop]: Abstraction has 10812 states and 36105 transitions.
[2021-06-12 21:26:05,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10812 states and 36105 transitions.
[2021-06-12 21:26:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:05,236 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:05,236 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:05,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable949,122 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:05,437 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:05,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1336502783, now seen corresponding path program 123 times
[2021-06-12 21:26:05,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:05,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607155020]
[2021-06-12 21:26:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:05,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:05,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607155020]
[2021-06-12 21:26:05,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607155020] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:05,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718538394]
[2021-06-12 21:26:05,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:05,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:26:05,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:05,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:26:05,785 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:06,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718538394] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:06,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:06,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:26:06,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068427298]
[2021-06-12 21:26:06,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:06,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:06,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:06,467 INFO L87 Difference]: Start difference. First operand 10812 states and 36105 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:08,274 INFO L93 Difference]: Finished difference Result 13375 states and 43502 transitions.
[2021-06-12 21:26:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:26:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:08,294 INFO L225 Difference]: With dead ends: 13375
[2021-06-12 21:26:08,294 INFO L226 Difference]: Without dead ends: 13261
[2021-06-12 21:26:08,294 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1764.9ms TimeCoverageRelationStatistics Valid=466, Invalid=2956, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:26:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states.
[2021-06-12 21:26:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 10838.
[2021-06-12 21:26:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10838 states, 10837 states have (on average 3.3399464796530407) internal successors, (36195), 10837 states have internal predecessors, (36195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10838 states to 10838 states and 36195 transitions.
[2021-06-12 21:26:08,469 INFO L78 Accepts]: Start accepts. Automaton has 10838 states and 36195 transitions. Word has length 36
[2021-06-12 21:26:08,469 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:08,469 INFO L482 AbstractCegarLoop]: Abstraction has 10838 states and 36195 transitions.
[2021-06-12 21:26:08,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10838 states and 36195 transitions.
[2021-06-12 21:26:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:08,482 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:08,482 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:08,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable961,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:08,682 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1726366165, now seen corresponding path program 124 times
[2021-06-12 21:26:08,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:08,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444737392]
[2021-06-12 21:26:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:08,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:08,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444737392]
[2021-06-12 21:26:08,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444737392] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:08,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066106212]
[2021-06-12 21:26:08,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:09,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:26:09,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:09,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:26:09,022 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:09,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066106212] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:09,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:09,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:26:09,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140835819]
[2021-06-12 21:26:09,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:09,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:09,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:09,718 INFO L87 Difference]: Start difference. First operand 10838 states and 36195 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:11,572 INFO L93 Difference]: Finished difference Result 12539 states and 41310 transitions.
[2021-06-12 21:26:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-06-12 21:26:11,573 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:11,592 INFO L225 Difference]: With dead ends: 12539
[2021-06-12 21:26:11,592 INFO L226 Difference]: Without dead ends: 12419
[2021-06-12 21:26:11,593 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1541.3ms TimeCoverageRelationStatistics Valid=403, Invalid=2353, Unknown=0, NotChecked=0, Total=2756
[2021-06-12 21:26:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states.
[2021-06-12 21:26:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 10850.
[2021-06-12 21:26:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10850 states, 10849 states have (on average 3.3397548161120842) internal successors, (36233), 10849 states have internal predecessors, (36233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 36233 transitions.
[2021-06-12 21:26:11,771 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 36233 transitions. Word has length 36
[2021-06-12 21:26:11,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:11,771 INFO L482 AbstractCegarLoop]: Abstraction has 10850 states and 36233 transitions.
[2021-06-12 21:26:11,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:11,772 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 36233 transitions.
[2021-06-12 21:26:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:11,784 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:11,784 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:11,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable972
[2021-06-12 21:26:11,997 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:11,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1656256129, now seen corresponding path program 125 times
[2021-06-12 21:26:11,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:11,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397693975]
[2021-06-12 21:26:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:12,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:12,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397693975]
[2021-06-12 21:26:12,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397693975] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:12,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675511848]
[2021-06-12 21:26:12,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:12,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:26:12,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:12,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:26:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:12,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675511848] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:12,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:12,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:26:12,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816543695]
[2021-06-12 21:26:12,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:12,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:12,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:12,949 INFO L87 Difference]: Start difference. First operand 10850 states and 36233 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:14,182 INFO L93 Difference]: Finished difference Result 12138 states and 40167 transitions.
[2021-06-12 21:26:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2021-06-12 21:26:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:14,200 INFO L225 Difference]: With dead ends: 12138
[2021-06-12 21:26:14,200 INFO L226 Difference]: Without dead ends: 12058
[2021-06-12 21:26:14,201 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1291.6ms TimeCoverageRelationStatistics Valid=327, Invalid=1835, Unknown=0, NotChecked=0, Total=2162
[2021-06-12 21:26:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12058 states.
[2021-06-12 21:26:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12058 to 10854.
[2021-06-12 21:26:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10854 states, 10853 states have (on average 3.3396295955035473) internal successors, (36245), 10853 states have internal predecessors, (36245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10854 states to 10854 states and 36245 transitions.
[2021-06-12 21:26:14,362 INFO L78 Accepts]: Start accepts. Automaton has 10854 states and 36245 transitions. Word has length 36
[2021-06-12 21:26:14,362 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:14,362 INFO L482 AbstractCegarLoop]: Abstraction has 10854 states and 36245 transitions.
[2021-06-12 21:26:14,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 10854 states and 36245 transitions.
[2021-06-12 21:26:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:14,375 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:14,375 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:14,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable983
[2021-06-12 21:26:14,585 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1157838787, now seen corresponding path program 126 times
[2021-06-12 21:26:14,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:14,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371366043]
[2021-06-12 21:26:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:14,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:14,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371366043]
[2021-06-12 21:26:14,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371366043] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:14,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771914372]
[2021-06-12 21:26:14,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:14,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-06-12 21:26:14,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:14,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:26:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:15,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771914372] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:15,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:15,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:26:15,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572182448]
[2021-06-12 21:26:15,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:15,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:15,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=974, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:15,570 INFO L87 Difference]: Start difference. First operand 10854 states and 36245 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:18,020 INFO L93 Difference]: Finished difference Result 16224 states and 52194 transitions.
[2021-06-12 21:26:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2021-06-12 21:26:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:18,050 INFO L225 Difference]: With dead ends: 16224
[2021-06-12 21:26:18,050 INFO L226 Difference]: Without dead ends: 16046
[2021-06-12 21:26:18,051 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 2287.5ms TimeCoverageRelationStatistics Valid=921, Invalid=4049, Unknown=0, NotChecked=0, Total=4970
[2021-06-12 21:26:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16046 states.
[2021-06-12 21:26:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16046 to 10908.
[2021-06-12 21:26:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10908 states, 10907 states have (on average 3.339323370312643) internal successors, (36422), 10907 states have internal predecessors, (36422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10908 states to 10908 states and 36422 transitions.
[2021-06-12 21:26:18,261 INFO L78 Accepts]: Start accepts. Automaton has 10908 states and 36422 transitions. Word has length 36
[2021-06-12 21:26:18,261 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:18,261 INFO L482 AbstractCegarLoop]: Abstraction has 10908 states and 36422 transitions.
[2021-06-12 21:26:18,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:18,261 INFO L276 IsEmpty]: Start isEmpty. Operand 10908 states and 36422 transitions.
[2021-06-12 21:26:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:18,274 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:18,274 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:18,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable988
[2021-06-12 21:26:18,474 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1317918593, now seen corresponding path program 127 times
[2021-06-12 21:26:18,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:18,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022652797]
[2021-06-12 21:26:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:18,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:18,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022652797]
[2021-06-12 21:26:18,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022652797] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:18,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001762748]
[2021-06-12 21:26:18,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:18,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:26:18,818 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:19,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001762748] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:19,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:19,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:26:19,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357952973]
[2021-06-12 21:26:19,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:19,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:19,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:19,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1024, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:19,564 INFO L87 Difference]: Start difference. First operand 10908 states and 36422 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:21,079 INFO L93 Difference]: Finished difference Result 12270 states and 40536 transitions.
[2021-06-12 21:26:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:26:21,080 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:21,101 INFO L225 Difference]: With dead ends: 12270
[2021-06-12 21:26:21,102 INFO L226 Difference]: Without dead ends: 12150
[2021-06-12 21:26:21,102 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 1527.4ms TimeCoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:26:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states.
[2021-06-12 21:26:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 10888.
[2021-06-12 21:26:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10888 states, 10887 states have (on average 3.3390281987691743) internal successors, (36352), 10887 states have internal predecessors, (36352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10888 states to 10888 states and 36352 transitions.
[2021-06-12 21:26:21,275 INFO L78 Accepts]: Start accepts. Automaton has 10888 states and 36352 transitions. Word has length 36
[2021-06-12 21:26:21,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:21,275 INFO L482 AbstractCegarLoop]: Abstraction has 10888 states and 36352 transitions.
[2021-06-12 21:26:21,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 10888 states and 36352 transitions.
[2021-06-12 21:26:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:21,288 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:21,288 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:21,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable999,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:21,489 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash -551580651, now seen corresponding path program 128 times
[2021-06-12 21:26:21,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:21,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455596670]
[2021-06-12 21:26:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:21,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:21,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455596670]
[2021-06-12 21:26:21,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455596670] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:21,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004022180]
[2021-06-12 21:26:21,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:21,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:26:21,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:21,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:26:21,839 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:22,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004022180] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:22,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:22,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:26:22,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983915577]
[2021-06-12 21:26:22,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:22,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:22,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:22,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:22,497 INFO L87 Difference]: Start difference. First operand 10888 states and 36352 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:24,655 INFO L93 Difference]: Finished difference Result 14122 states and 46166 transitions.
[2021-06-12 21:26:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2021-06-12 21:26:24,655 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:24,678 INFO L225 Difference]: With dead ends: 14122
[2021-06-12 21:26:24,678 INFO L226 Difference]: Without dead ends: 14002
[2021-06-12 21:26:24,679 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1883.3ms TimeCoverageRelationStatistics Valid=529, Invalid=3377, Unknown=0, NotChecked=0, Total=3906
[2021-06-12 21:26:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14002 states.
[2021-06-12 21:26:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14002 to 10950.
[2021-06-12 21:26:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10950 states, 10949 states have (on average 3.3371084117270984) internal successors, (36538), 10949 states have internal predecessors, (36538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10950 states to 10950 states and 36538 transitions.
[2021-06-12 21:26:24,905 INFO L78 Accepts]: Start accepts. Automaton has 10950 states and 36538 transitions. Word has length 36
[2021-06-12 21:26:24,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:24,905 INFO L482 AbstractCegarLoop]: Abstraction has 10950 states and 36538 transitions.
[2021-06-12 21:26:24,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 10950 states and 36538 transitions.
[2021-06-12 21:26:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:24,918 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:24,918 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:25,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1011
[2021-06-12 21:26:25,118 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1389507819, now seen corresponding path program 129 times
[2021-06-12 21:26:25,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:25,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591787636]
[2021-06-12 21:26:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:25,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:25,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591787636]
[2021-06-12 21:26:25,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591787636] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:25,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539550368]
[2021-06-12 21:26:25,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:25,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:26:25,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:25,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:26:25,385 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:25,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539550368] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:25,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:25,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:26:25,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126370673]
[2021-06-12 21:26:25,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:26:25,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:26:25,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:26:25,912 INFO L87 Difference]: Start difference. First operand 10950 states and 36538 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:28,506 INFO L93 Difference]: Finished difference Result 12361 states and 40393 transitions.
[2021-06-12 21:26:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:26:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:28,522 INFO L225 Difference]: With dead ends: 12361
[2021-06-12 21:26:28,523 INFO L226 Difference]: Without dead ends: 12096
[2021-06-12 21:26:28,523 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1507 ImplicationChecksByTransitivity, 2092.6ms TimeCoverageRelationStatistics Valid=654, Invalid=4748, Unknown=0, NotChecked=0, Total=5402
[2021-06-12 21:26:28,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12096 states.
[2021-06-12 21:26:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12096 to 10924.
[2021-06-12 21:26:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10924 states, 10923 states have (on average 3.339924929048796) internal successors, (36482), 10923 states have internal predecessors, (36482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10924 states to 10924 states and 36482 transitions.
[2021-06-12 21:26:28,696 INFO L78 Accepts]: Start accepts. Automaton has 10924 states and 36482 transitions. Word has length 36
[2021-06-12 21:26:28,696 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:28,696 INFO L482 AbstractCegarLoop]: Abstraction has 10924 states and 36482 transitions.
[2021-06-12 21:26:28,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 10924 states and 36482 transitions.
[2021-06-12 21:26:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:28,709 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:28,709 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:28,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1018
[2021-06-12 21:26:28,910 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:28,910 INFO L82 PathProgramCache]: Analyzing trace with hash -274730475, now seen corresponding path program 130 times
[2021-06-12 21:26:28,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:28,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663015386]
[2021-06-12 21:26:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:29,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:29,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663015386]
[2021-06-12 21:26:29,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663015386] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:29,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058068368]
[2021-06-12 21:26:29,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:29,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:26:29,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:29,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:26:29,206 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:29,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058068368] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:29,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:29,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38
[2021-06-12 21:26:29,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164301980]
[2021-06-12 21:26:29,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states
[2021-06-12 21:26:29,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:29,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2021-06-12 21:26:29,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482
[2021-06-12 21:26:29,803 INFO L87 Difference]: Start difference. First operand 10924 states and 36482 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:32,651 INFO L93 Difference]: Finished difference Result 16306 states and 52377 transitions.
[2021-06-12 21:26:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2021-06-12 21:26:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:32,679 INFO L225 Difference]: With dead ends: 16306
[2021-06-12 21:26:32,679 INFO L226 Difference]: Without dead ends: 16052
[2021-06-12 21:26:32,679 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 2546.6ms TimeCoverageRelationStatistics Valid=1101, Invalid=6909, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:26:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16052 states.
[2021-06-12 21:26:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16052 to 10922.
[2021-06-12 21:26:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10922 states, 10921 states have (on average 3.3412691145499496) internal successors, (36490), 10921 states have internal predecessors, (36490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10922 states to 10922 states and 36490 transitions.
[2021-06-12 21:26:32,880 INFO L78 Accepts]: Start accepts. Automaton has 10922 states and 36490 transitions. Word has length 36
[2021-06-12 21:26:32,880 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:32,880 INFO L482 AbstractCegarLoop]: Abstraction has 10922 states and 36490 transitions.
[2021-06-12 21:26:32,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10922 states and 36490 transitions.
[2021-06-12 21:26:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:32,893 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:32,893 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:33,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1022
[2021-06-12 21:26:33,094 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:33,094 INFO L82 PathProgramCache]: Analyzing trace with hash 28844817, now seen corresponding path program 131 times
[2021-06-12 21:26:33,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:33,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481160675]
[2021-06-12 21:26:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:33,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:33,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481160675]
[2021-06-12 21:26:33,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481160675] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:33,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903615813]
[2021-06-12 21:26:33,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:33,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:26:33,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:33,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-06-12 21:26:33,392 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:34,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903615813] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:34,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:34,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38
[2021-06-12 21:26:34,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736331211]
[2021-06-12 21:26:34,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states
[2021-06-12 21:26:34,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:34,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2021-06-12 21:26:34,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482
[2021-06-12 21:26:34,006 INFO L87 Difference]: Start difference. First operand 10922 states and 36490 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:37,472 INFO L93 Difference]: Finished difference Result 17471 states and 55908 transitions.
[2021-06-12 21:26:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2021-06-12 21:26:37,472 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:37,497 INFO L225 Difference]: With dead ends: 17471
[2021-06-12 21:26:37,498 INFO L226 Difference]: Without dead ends: 17212
[2021-06-12 21:26:37,498 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3072 ImplicationChecksByTransitivity, 2923.3ms TimeCoverageRelationStatistics Valid=1320, Invalid=8382, Unknown=0, NotChecked=0, Total=9702
[2021-06-12 21:26:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2021-06-12 21:26:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 10990.
[2021-06-12 21:26:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10990 states, 10989 states have (on average 3.3397033397033398) internal successors, (36700), 10989 states have internal predecessors, (36700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10990 states to 10990 states and 36700 transitions.
[2021-06-12 21:26:37,705 INFO L78 Accepts]: Start accepts. Automaton has 10990 states and 36700 transitions. Word has length 36
[2021-06-12 21:26:37,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:37,705 INFO L482 AbstractCegarLoop]: Abstraction has 10990 states and 36700 transitions.
[2021-06-12 21:26:37,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10990 states and 36700 transitions.
[2021-06-12 21:26:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:37,718 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:37,718 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:37,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1026,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:37,919 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:37,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2082175979, now seen corresponding path program 132 times
[2021-06-12 21:26:37,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:37,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653468623]
[2021-06-12 21:26:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:38,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:38,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653468623]
[2021-06-12 21:26:38,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653468623] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:38,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781643353]
[2021-06-12 21:26:38,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:38,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:26:38,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:26:38,207 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:38,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781643353] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:38,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:38,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:26:38,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834208850]
[2021-06-12 21:26:38,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:26:38,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:38,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:26:38,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1103, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:26:38,731 INFO L87 Difference]: Start difference. First operand 10990 states and 36700 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:43,933 INFO L93 Difference]: Finished difference Result 19062 states and 60563 transitions.
[2021-06-12 21:26:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2021-06-12 21:26:43,933 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:43,960 INFO L225 Difference]: With dead ends: 19062
[2021-06-12 21:26:43,960 INFO L226 Difference]: Without dead ends: 18879
[2021-06-12 21:26:43,961 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4132 ImplicationChecksByTransitivity, 3740.1ms TimeCoverageRelationStatistics Valid=1802, Invalid=10408, Unknown=0, NotChecked=0, Total=12210
[2021-06-12 21:26:43,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18879 states.
[2021-06-12 21:26:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18879 to 10982.
[2021-06-12 21:26:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10982 states, 10981 states have (on average 3.3392222930516344) internal successors, (36668), 10981 states have internal predecessors, (36668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 36668 transitions.
[2021-06-12 21:26:44,185 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 36668 transitions. Word has length 36
[2021-06-12 21:26:44,185 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:44,185 INFO L482 AbstractCegarLoop]: Abstraction has 10982 states and 36668 transitions.
[2021-06-12 21:26:44,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 36668 transitions.
[2021-06-12 21:26:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:44,198 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:44,198 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:44,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1028
[2021-06-12 21:26:44,398 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:44,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1895461309, now seen corresponding path program 133 times
[2021-06-12 21:26:44,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:44,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53769016]
[2021-06-12 21:26:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:44,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:44,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53769016]
[2021-06-12 21:26:44,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53769016] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:44,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984988861]
[2021-06-12 21:26:44,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:44,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:26:44,729 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:45,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984988861] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:45,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:45,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:26:45,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910313317]
[2021-06-12 21:26:45,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:26:45,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:26:45,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:26:45,371 INFO L87 Difference]: Start difference. First operand 10982 states and 36668 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:47,096 INFO L93 Difference]: Finished difference Result 14079 states and 46122 transitions.
[2021-06-12 21:26:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2021-06-12 21:26:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:47,119 INFO L225 Difference]: With dead ends: 14079
[2021-06-12 21:26:47,119 INFO L226 Difference]: Without dead ends: 13998
[2021-06-12 21:26:47,119 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1798.9ms TimeCoverageRelationStatistics Valid=581, Invalid=3451, Unknown=0, NotChecked=0, Total=4032
[2021-06-12 21:26:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13998 states.
[2021-06-12 21:26:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13998 to 11064.
[2021-06-12 21:26:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11064 states, 11063 states have (on average 3.3388773388773387) internal successors, (36938), 11063 states have internal predecessors, (36938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11064 states to 11064 states and 36938 transitions.
[2021-06-12 21:26:47,303 INFO L78 Accepts]: Start accepts. Automaton has 11064 states and 36938 transitions. Word has length 36
[2021-06-12 21:26:47,303 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:47,303 INFO L482 AbstractCegarLoop]: Abstraction has 11064 states and 36938 transitions.
[2021-06-12 21:26:47,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 11064 states and 36938 transitions.
[2021-06-12 21:26:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:47,317 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:47,317 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:47,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1032,133 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:47,518 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1057534141, now seen corresponding path program 134 times
[2021-06-12 21:26:47,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:47,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732723778]
[2021-06-12 21:26:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:47,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:47,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732723778]
[2021-06-12 21:26:47,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732723778] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:47,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506907097]
[2021-06-12 21:26:47,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:47,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:26:47,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:47,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:26:47,796 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:48,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506907097] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:48,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:48,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:26:48,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984979417]
[2021-06-12 21:26:48,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:26:48,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:48,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:26:48,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1085, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:26:48,333 INFO L87 Difference]: Start difference. First operand 11064 states and 36938 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:50,992 INFO L93 Difference]: Finished difference Result 12257 states and 40176 transitions.
[2021-06-12 21:26:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2021-06-12 21:26:50,993 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:51,011 INFO L225 Difference]: With dead ends: 12257
[2021-06-12 21:26:51,011 INFO L226 Difference]: Without dead ends: 12020
[2021-06-12 21:26:51,012 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 2065.4ms TimeCoverageRelationStatistics Valid=707, Invalid=4993, Unknown=0, NotChecked=0, Total=5700
[2021-06-12 21:26:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states.
[2021-06-12 21:26:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 11036.
[2021-06-12 21:26:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11036 states, 11035 states have (on average 3.3408246488445856) internal successors, (36866), 11035 states have internal predecessors, (36866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 36866 transitions.
[2021-06-12 21:26:51,196 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 36866 transitions. Word has length 36
[2021-06-12 21:26:51,196 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:51,196 INFO L482 AbstractCegarLoop]: Abstraction has 11036 states and 36866 transitions.
[2021-06-12 21:26:51,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 36866 transitions.
[2021-06-12 21:26:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:51,209 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:51,209 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:51,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1039
[2021-06-12 21:26:51,409 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash 379472321, now seen corresponding path program 135 times
[2021-06-12 21:26:51,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:51,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519206375]
[2021-06-12 21:26:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:51,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:51,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519206375]
[2021-06-12 21:26:51,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519206375] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:51,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121491368]
[2021-06-12 21:26:51,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:51,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:26:51,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:51,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:26:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:52,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121491368] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:52,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:52,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:26:52,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421873699]
[2021-06-12 21:26:52,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:26:52,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:52,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:26:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:26:52,418 INFO L87 Difference]: Start difference. First operand 11036 states and 36866 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:55,692 INFO L93 Difference]: Finished difference Result 17161 states and 55605 transitions.
[2021-06-12 21:26:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2021-06-12 21:26:55,692 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:26:55,717 INFO L225 Difference]: With dead ends: 17161
[2021-06-12 21:26:55,717 INFO L226 Difference]: Without dead ends: 17047
[2021-06-12 21:26:55,717 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 2737.5ms TimeCoverageRelationStatistics Valid=959, Invalid=5361, Unknown=0, NotChecked=0, Total=6320
[2021-06-12 21:26:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17047 states.
[2021-06-12 21:26:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17047 to 11054.
[2021-06-12 21:26:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11054 states, 11053 states have (on average 3.3429838053017282) internal successors, (36950), 11053 states have internal predecessors, (36950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11054 states to 11054 states and 36950 transitions.
[2021-06-12 21:26:55,918 INFO L78 Accepts]: Start accepts. Automaton has 11054 states and 36950 transitions. Word has length 36
[2021-06-12 21:26:55,919 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:26:55,919 INFO L482 AbstractCegarLoop]: Abstraction has 11054 states and 36950 transitions.
[2021-06-12 21:26:55,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 11054 states and 36950 transitions.
[2021-06-12 21:26:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:26:55,931 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:26:55,931 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:26:56,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1043,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:56,132 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:26:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:26:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2017581567, now seen corresponding path program 136 times
[2021-06-12 21:26:56,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:26:56,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942791079]
[2021-06-12 21:26:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:26:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:26:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:56,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:26:56,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942791079]
[2021-06-12 21:26:56,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942791079] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:56,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302047201]
[2021-06-12 21:26:56,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:26:56,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:26:56,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:26:56,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:26:56,515 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:26:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:26:57,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302047201] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:26:57,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:26:57,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:26:57,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106795744]
[2021-06-12 21:26:57,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:26:57,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:26:57,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:26:57,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:26:57,127 INFO L87 Difference]: Start difference. First operand 11054 states and 36950 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:26:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:26:59,987 INFO L93 Difference]: Finished difference Result 20331 states and 65982 transitions.
[2021-06-12 21:26:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2021-06-12 21:26:59,989 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:26:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:00,022 INFO L225 Difference]: With dead ends: 20331
[2021-06-12 21:27:00,022 INFO L226 Difference]: Without dead ends: 20211
[2021-06-12 21:27:00,023 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 2674.5ms TimeCoverageRelationStatistics Valid=1048, Invalid=4958, Unknown=0, NotChecked=0, Total=6006
[2021-06-12 21:27:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20211 states.
[2021-06-12 21:27:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20211 to 11068.
[2021-06-12 21:27:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11068 states, 11067 states have (on average 3.3430017168157584) internal successors, (36997), 11067 states have internal predecessors, (36997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11068 states to 11068 states and 36997 transitions.
[2021-06-12 21:27:00,250 INFO L78 Accepts]: Start accepts. Automaton has 11068 states and 36997 transitions. Word has length 36
[2021-06-12 21:27:00,250 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:00,251 INFO L482 AbstractCegarLoop]: Abstraction has 11068 states and 36997 transitions.
[2021-06-12 21:27:00,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 11068 states and 36997 transitions.
[2021-06-12 21:27:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:00,264 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:00,264 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:00,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1050
[2021-06-12 21:27:00,464 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1292544127, now seen corresponding path program 137 times
[2021-06-12 21:27:00,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:00,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890311414]
[2021-06-12 21:27:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:00,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:00,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890311414]
[2021-06-12 21:27:00,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890311414] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:00,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541487173]
[2021-06-12 21:27:00,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:00,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:27:00,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:00,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:27:00,828 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:01,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541487173] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:01,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:01,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:27:01,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467950569]
[2021-06-12 21:27:01,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:01,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:01,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:01,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:01,371 INFO L87 Difference]: Start difference. First operand 11068 states and 36997 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:02,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:02,823 INFO L93 Difference]: Finished difference Result 14897 states and 49054 transitions.
[2021-06-12 21:27:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-06-12 21:27:02,824 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:02,846 INFO L225 Difference]: With dead ends: 14897
[2021-06-12 21:27:02,847 INFO L226 Difference]: Without dead ends: 14817
[2021-06-12 21:27:02,847 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1363.3ms TimeCoverageRelationStatistics Valid=456, Invalid=2094, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:27:02,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14817 states.
[2021-06-12 21:27:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14817 to 11064.
[2021-06-12 21:27:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11064 states, 11063 states have (on average 3.343125734430082) internal successors, (36985), 11063 states have internal predecessors, (36985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11064 states to 11064 states and 36985 transitions.
[2021-06-12 21:27:03,100 INFO L78 Accepts]: Start accepts. Automaton has 11064 states and 36985 transitions. Word has length 36
[2021-06-12 21:27:03,100 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:03,100 INFO L482 AbstractCegarLoop]: Abstraction has 11064 states and 36985 transitions.
[2021-06-12 21:27:03,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11064 states and 36985 transitions.
[2021-06-12 21:27:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:03,113 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:03,113 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:03,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1057
[2021-06-12 21:27:03,313 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1429501845, now seen corresponding path program 138 times
[2021-06-12 21:27:03,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:03,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667218037]
[2021-06-12 21:27:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:03,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:03,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667218037]
[2021-06-12 21:27:03,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667218037] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:03,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050020139]
[2021-06-12 21:27:03,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:03,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:27:03,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:03,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:03,618 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:04,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050020139] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:04,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:04,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:27:04,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141400018]
[2021-06-12 21:27:04,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:27:04,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:04,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:27:04,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:27:04,165 INFO L87 Difference]: Start difference. First operand 11064 states and 36985 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:06,436 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43
[2021-06-12 21:27:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:06,905 INFO L93 Difference]: Finished difference Result 13454 states and 43876 transitions.
[2021-06-12 21:27:06,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2021-06-12 21:27:06,906 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:06,926 INFO L225 Difference]: With dead ends: 13454
[2021-06-12 21:27:06,926 INFO L226 Difference]: Without dead ends: 13139
[2021-06-12 21:27:06,926 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2107.6ms TimeCoverageRelationStatistics Valid=770, Invalid=4780, Unknown=0, NotChecked=0, Total=5550
[2021-06-12 21:27:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13139 states.
[2021-06-12 21:27:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13139 to 11133.
[2021-06-12 21:27:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11133 states, 11132 states have (on average 3.3459396334890408) internal successors, (37247), 11132 states have internal predecessors, (37247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11133 states to 11133 states and 37247 transitions.
[2021-06-12 21:27:07,113 INFO L78 Accepts]: Start accepts. Automaton has 11133 states and 37247 transitions. Word has length 36
[2021-06-12 21:27:07,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:07,113 INFO L482 AbstractCegarLoop]: Abstraction has 11133 states and 37247 transitions.
[2021-06-12 21:27:07,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 11133 states and 37247 transitions.
[2021-06-12 21:27:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:07,126 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:07,126 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:07,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1061
[2021-06-12 21:27:07,327 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:07,327 INFO L82 PathProgramCache]: Analyzing trace with hash -733373887, now seen corresponding path program 139 times
[2021-06-12 21:27:07,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:07,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371321602]
[2021-06-12 21:27:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:07,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:07,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371321602]
[2021-06-12 21:27:07,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371321602] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:07,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960897613]
[2021-06-12 21:27:07,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:07,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:07,583 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:08,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960897613] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:08,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:08,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:27:08,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875415079]
[2021-06-12 21:27:08,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:27:08,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:08,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:27:08,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:27:08,116 INFO L87 Difference]: Start difference. First operand 11133 states and 37247 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:10,332 INFO L93 Difference]: Finished difference Result 16080 states and 51932 transitions.
[2021-06-12 21:27:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2021-06-12 21:27:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:10,357 INFO L225 Difference]: With dead ends: 16080
[2021-06-12 21:27:10,357 INFO L226 Difference]: Without dead ends: 15916
[2021-06-12 21:27:10,358 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 1967.6ms TimeCoverageRelationStatistics Valid=890, Invalid=4366, Unknown=0, NotChecked=0, Total=5256
[2021-06-12 21:27:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15916 states.
[2021-06-12 21:27:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15916 to 11125.
[2021-06-12 21:27:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 11124 states have (on average 3.344750089895721) internal successors, (37207), 11124 states have internal predecessors, (37207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 37207 transitions.
[2021-06-12 21:27:10,563 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 37207 transitions. Word has length 36
[2021-06-12 21:27:10,563 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:10,563 INFO L482 AbstractCegarLoop]: Abstraction has 11125 states and 37207 transitions.
[2021-06-12 21:27:10,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 37207 transitions.
[2021-06-12 21:27:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:10,575 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:10,575 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:10,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1065,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:10,776 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash 188328253, now seen corresponding path program 140 times
[2021-06-12 21:27:10,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:10,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937103061]
[2021-06-12 21:27:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:11,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:11,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937103061]
[2021-06-12 21:27:11,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937103061] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:11,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682258532]
[2021-06-12 21:27:11,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:11,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:27:11,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:11,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:11,028 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:11,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682258532] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:11,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:11,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:27:11,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208102797]
[2021-06-12 21:27:11,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:27:11,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:11,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:27:11,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:27:11,519 INFO L87 Difference]: Start difference. First operand 11125 states and 37207 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:13,993 INFO L93 Difference]: Finished difference Result 16618 states and 53652 transitions.
[2021-06-12 21:27:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2021-06-12 21:27:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:14,019 INFO L225 Difference]: With dead ends: 16618
[2021-06-12 21:27:14,019 INFO L226 Difference]: Without dead ends: 16422
[2021-06-12 21:27:14,019 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2125.7ms TimeCoverageRelationStatistics Valid=1010, Invalid=4540, Unknown=0, NotChecked=0, Total=5550
[2021-06-12 21:27:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16422 states.
[2021-06-12 21:27:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16422 to 11054.
[2021-06-12 21:27:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11054 states, 11053 states have (on average 3.3440694833981723) internal successors, (36962), 11053 states have internal predecessors, (36962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11054 states to 11054 states and 36962 transitions.
[2021-06-12 21:27:14,238 INFO L78 Accepts]: Start accepts. Automaton has 11054 states and 36962 transitions. Word has length 36
[2021-06-12 21:27:14,238 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:14,239 INFO L482 AbstractCegarLoop]: Abstraction has 11054 states and 36962 transitions.
[2021-06-12 21:27:14,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 11054 states and 36962 transitions.
[2021-06-12 21:27:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:14,253 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:14,253 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:14,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1069
[2021-06-12 21:27:14,453 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:14,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1162010563, now seen corresponding path program 141 times
[2021-06-12 21:27:14,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:14,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50056623]
[2021-06-12 21:27:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:14,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:14,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50056623]
[2021-06-12 21:27:14,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50056623] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:14,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316231746]
[2021-06-12 21:27:14,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:14,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:27:14,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:14,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:27:14,688 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:15,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316231746] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:15,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:15,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:27:15,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939424175]
[2021-06-12 21:27:15,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:27:15,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:15,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:27:15,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:27:15,215 INFO L87 Difference]: Start difference. First operand 11054 states and 36962 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:16,574 INFO L93 Difference]: Finished difference Result 16893 states and 55491 transitions.
[2021-06-12 21:27:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:27:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:16,601 INFO L225 Difference]: With dead ends: 16893
[2021-06-12 21:27:16,601 INFO L226 Difference]: Without dead ends: 16813
[2021-06-12 21:27:16,602 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1142.9ms TimeCoverageRelationStatistics Valid=499, Invalid=2257, Unknown=0, NotChecked=0, Total=2756
[2021-06-12 21:27:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16813 states.
[2021-06-12 21:27:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16813 to 11018.
[2021-06-12 21:27:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11018 states, 11017 states have (on average 3.3433784151765455) internal successors, (36834), 11017 states have internal predecessors, (36834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11018 states to 11018 states and 36834 transitions.
[2021-06-12 21:27:16,831 INFO L78 Accepts]: Start accepts. Automaton has 11018 states and 36834 transitions. Word has length 36
[2021-06-12 21:27:16,831 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:16,831 INFO L482 AbstractCegarLoop]: Abstraction has 11018 states and 36834 transitions.
[2021-06-12 21:27:16,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 11018 states and 36834 transitions.
[2021-06-12 21:27:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:16,844 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:16,844 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:17,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1073,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:17,045 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:17,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:17,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1207331367, now seen corresponding path program 142 times
[2021-06-12 21:27:17,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:17,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753441480]
[2021-06-12 21:27:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:17,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:17,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753441480]
[2021-06-12 21:27:17,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753441480] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:17,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375921959]
[2021-06-12 21:27:17,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:17,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:27:17,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:17,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:27:17,341 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:17,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375921959] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:17,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:17,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:27:17,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171898210]
[2021-06-12 21:27:17,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:17,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:17,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:17,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:17,884 INFO L87 Difference]: Start difference. First operand 11018 states and 36834 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:19,094 INFO L93 Difference]: Finished difference Result 12507 states and 41160 transitions.
[2021-06-12 21:27:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:27:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:19,114 INFO L225 Difference]: With dead ends: 12507
[2021-06-12 21:27:19,114 INFO L226 Difference]: Without dead ends: 12342
[2021-06-12 21:27:19,115 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1238.3ms TimeCoverageRelationStatistics Valid=405, Invalid=2457, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:27:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12342 states.
[2021-06-12 21:27:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12342 to 10992.
[2021-06-12 21:27:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10992 states, 10991 states have (on average 3.34400873441907) internal successors, (36754), 10991 states have internal predecessors, (36754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10992 states to 10992 states and 36754 transitions.
[2021-06-12 21:27:19,304 INFO L78 Accepts]: Start accepts. Automaton has 10992 states and 36754 transitions. Word has length 36
[2021-06-12 21:27:19,305 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:19,305 INFO L482 AbstractCegarLoop]: Abstraction has 10992 states and 36754 transitions.
[2021-06-12 21:27:19,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10992 states and 36754 transitions.
[2021-06-12 21:27:19,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:19,318 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:19,318 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:19,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1087,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:19,519 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:19,519 INFO L82 PathProgramCache]: Analyzing trace with hash -255059011, now seen corresponding path program 143 times
[2021-06-12 21:27:19,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:19,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982743575]
[2021-06-12 21:27:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:19,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:19,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982743575]
[2021-06-12 21:27:19,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982743575] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:19,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115541287]
[2021-06-12 21:27:19,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:19,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2021-06-12 21:27:19,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:19,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:27:19,762 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:20,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115541287] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:20,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:20,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:27:20,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434882970]
[2021-06-12 21:27:20,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:20,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:20,346 INFO L87 Difference]: Start difference. First operand 10992 states and 36754 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:22,166 INFO L93 Difference]: Finished difference Result 18579 states and 60781 transitions.
[2021-06-12 21:27:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:27:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:22,199 INFO L225 Difference]: With dead ends: 18579
[2021-06-12 21:27:22,199 INFO L226 Difference]: Without dead ends: 18499
[2021-06-12 21:27:22,200 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1322.5ms TimeCoverageRelationStatistics Valid=531, Invalid=2549, Unknown=0, NotChecked=0, Total=3080
[2021-06-12 21:27:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18499 states.
[2021-06-12 21:27:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18499 to 11116.
[2021-06-12 21:27:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11116 states, 11115 states have (on average 3.343229869545659) internal successors, (37160), 11115 states have internal predecessors, (37160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11116 states to 11116 states and 37160 transitions.
[2021-06-12 21:27:22,463 INFO L78 Accepts]: Start accepts. Automaton has 11116 states and 37160 transitions. Word has length 36
[2021-06-12 21:27:22,463 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:22,463 INFO L482 AbstractCegarLoop]: Abstraction has 11116 states and 37160 transitions.
[2021-06-12 21:27:22,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11116 states and 37160 transitions.
[2021-06-12 21:27:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:22,476 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:22,476 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:22,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1092
[2021-06-12 21:27:22,692 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash -642214895, now seen corresponding path program 144 times
[2021-06-12 21:27:22,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:22,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22899270]
[2021-06-12 21:27:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:22,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:22,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22899270]
[2021-06-12 21:27:22,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22899270] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:22,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334641930]
[2021-06-12 21:27:22,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:23,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-06-12 21:27:23,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:23,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:27:23,047 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:23,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334641930] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:23,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:23,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:27:23,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016233311]
[2021-06-12 21:27:23,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:27:23,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:23,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:27:23,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:27:23,625 INFO L87 Difference]: Start difference. First operand 11116 states and 37160 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:25,691 INFO L93 Difference]: Finished difference Result 19105 states and 62540 transitions.
[2021-06-12 21:27:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2021-06-12 21:27:25,691 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:25,722 INFO L225 Difference]: With dead ends: 19105
[2021-06-12 21:27:25,722 INFO L226 Difference]: Without dead ends: 19025
[2021-06-12 21:27:25,722 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 1766.8ms TimeCoverageRelationStatistics Valid=701, Invalid=3589, Unknown=0, NotChecked=0, Total=4290
[2021-06-12 21:27:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19025 states.
[2021-06-12 21:27:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19025 to 11194.
[2021-06-12 21:27:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11194 states, 11193 states have (on average 3.343696953453051) internal successors, (37426), 11193 states have internal predecessors, (37426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 37426 transitions.
[2021-06-12 21:27:26,025 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 37426 transitions. Word has length 36
[2021-06-12 21:27:26,025 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:26,025 INFO L482 AbstractCegarLoop]: Abstraction has 11194 states and 37426 transitions.
[2021-06-12 21:27:26,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:26,025 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 37426 transitions.
[2021-06-12 21:27:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:26,038 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:26,038 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:26,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1106,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:26,255 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:26,256 INFO L82 PathProgramCache]: Analyzing trace with hash 441740049, now seen corresponding path program 145 times
[2021-06-12 21:27:26,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:26,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704806938]
[2021-06-12 21:27:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:26,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:26,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704806938]
[2021-06-12 21:27:26,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704806938] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:26,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834544306]
[2021-06-12 21:27:26,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:26,573 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:27,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834544306] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:27,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:27,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:27:27,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102320801]
[2021-06-12 21:27:27,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:27:27,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:27,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:27:27,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:27:27,333 INFO L87 Difference]: Start difference. First operand 11194 states and 37426 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:30,135 INFO L93 Difference]: Finished difference Result 21615 states and 69306 transitions.
[2021-06-12 21:27:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:27:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:30,168 INFO L225 Difference]: With dead ends: 21615
[2021-06-12 21:27:30,168 INFO L226 Difference]: Without dead ends: 21495
[2021-06-12 21:27:30,169 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 2417.4ms TimeCoverageRelationStatistics Valid=1062, Invalid=4638, Unknown=0, NotChecked=0, Total=5700
[2021-06-12 21:27:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21495 states.
[2021-06-12 21:27:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21495 to 11242.
[2021-06-12 21:27:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11242 states, 11241 states have (on average 3.34489814073481) internal successors, (37600), 11241 states have internal predecessors, (37600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11242 states to 11242 states and 37600 transitions.
[2021-06-12 21:27:30,425 INFO L78 Accepts]: Start accepts. Automaton has 11242 states and 37600 transitions. Word has length 36
[2021-06-12 21:27:30,425 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:30,425 INFO L482 AbstractCegarLoop]: Abstraction has 11242 states and 37600 transitions.
[2021-06-12 21:27:30,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11242 states and 37600 transitions.
[2021-06-12 21:27:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:30,438 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:30,439 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:30,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1120,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:30,639 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:30,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1852934099, now seen corresponding path program 146 times
[2021-06-12 21:27:30,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:30,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160493958]
[2021-06-12 21:27:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:30,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:30,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160493958]
[2021-06-12 21:27:30,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160493958] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:30,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982551076]
[2021-06-12 21:27:30,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:30,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:27:30,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:30,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:30,940 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:31,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982551076] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:31,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:31,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:27:31,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063768392]
[2021-06-12 21:27:31,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:31,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:31,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:31,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:31,595 INFO L87 Difference]: Start difference. First operand 11242 states and 37600 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:34,158 INFO L93 Difference]: Finished difference Result 21465 states and 69086 transitions.
[2021-06-12 21:27:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:27:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:34,190 INFO L225 Difference]: With dead ends: 21465
[2021-06-12 21:27:34,190 INFO L226 Difference]: Without dead ends: 21345
[2021-06-12 21:27:34,191 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 2291.1ms TimeCoverageRelationStatistics Valid=1042, Invalid=4360, Unknown=0, NotChecked=0, Total=5402
[2021-06-12 21:27:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21345 states.
[2021-06-12 21:27:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21345 to 11262.
[2021-06-12 21:27:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11262 states, 11261 states have (on average 3.3419767338602258) internal successors, (37634), 11261 states have internal predecessors, (37634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11262 states to 11262 states and 37634 transitions.
[2021-06-12 21:27:34,496 INFO L78 Accepts]: Start accepts. Automaton has 11262 states and 37634 transitions. Word has length 36
[2021-06-12 21:27:34,496 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:34,496 INFO L482 AbstractCegarLoop]: Abstraction has 11262 states and 37634 transitions.
[2021-06-12 21:27:34,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 11262 states and 37634 transitions.
[2021-06-12 21:27:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:34,509 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:34,509 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:34,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1129,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:34,709 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:34,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1979488763, now seen corresponding path program 147 times
[2021-06-12 21:27:34,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:34,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15069764]
[2021-06-12 21:27:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:34,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:34,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15069764]
[2021-06-12 21:27:34,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15069764] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:34,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330092211]
[2021-06-12 21:27:34,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:34,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:27:34,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:34,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:27:34,971 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:35,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330092211] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:35,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:35,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:27:35,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533869968]
[2021-06-12 21:27:35,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:27:35,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:27:35,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:27:35,623 INFO L87 Difference]: Start difference. First operand 11262 states and 37634 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:37,947 INFO L93 Difference]: Finished difference Result 17308 states and 56811 transitions.
[2021-06-12 21:27:37,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2021-06-12 21:27:37,948 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:37,973 INFO L225 Difference]: With dead ends: 17308
[2021-06-12 21:27:37,974 INFO L226 Difference]: Without dead ends: 17194
[2021-06-12 21:27:37,974 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 2083.3ms TimeCoverageRelationStatistics Valid=676, Invalid=3880, Unknown=0, NotChecked=0, Total=4556
[2021-06-12 21:27:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17194 states.
[2021-06-12 21:27:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17194 to 11338.
[2021-06-12 21:27:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11338 states, 11337 states have (on average 3.3419775954838142) internal successors, (37888), 11337 states have internal predecessors, (37888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11338 states to 11338 states and 37888 transitions.
[2021-06-12 21:27:38,176 INFO L78 Accepts]: Start accepts. Automaton has 11338 states and 37888 transitions. Word has length 36
[2021-06-12 21:27:38,176 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:38,176 INFO L482 AbstractCegarLoop]: Abstraction has 11338 states and 37888 transitions.
[2021-06-12 21:27:38,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11338 states and 37888 transitions.
[2021-06-12 21:27:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:38,189 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:38,189 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:38,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1141,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:38,389 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1127896659, now seen corresponding path program 148 times
[2021-06-12 21:27:38,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:38,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193585997]
[2021-06-12 21:27:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:38,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:38,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193585997]
[2021-06-12 21:27:38,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193585997] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:38,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724206299]
[2021-06-12 21:27:38,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:38,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:27:38,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:27:38,681 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:39,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724206299] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:39,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:39,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:27:39,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454003341]
[2021-06-12 21:27:39,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:39,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:39,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:39,338 INFO L87 Difference]: Start difference. First operand 11338 states and 37888 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:41,072 INFO L93 Difference]: Finished difference Result 19945 states and 65481 transitions.
[2021-06-12 21:27:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:27:41,073 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:41,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:41,108 INFO L225 Difference]: With dead ends: 19945
[2021-06-12 21:27:41,108 INFO L226 Difference]: Without dead ends: 19825
[2021-06-12 21:27:41,109 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 1668.0ms TimeCoverageRelationStatistics Valid=568, Invalid=2738, Unknown=0, NotChecked=0, Total=3306
[2021-06-12 21:27:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19825 states.
[2021-06-12 21:27:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19825 to 11340.
[2021-06-12 21:27:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11340 states, 11339 states have (on average 3.34191727665579) internal successors, (37894), 11339 states have internal predecessors, (37894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11340 states to 11340 states and 37894 transitions.
[2021-06-12 21:27:41,350 INFO L78 Accepts]: Start accepts. Automaton has 11340 states and 37894 transitions. Word has length 36
[2021-06-12 21:27:41,350 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:41,350 INFO L482 AbstractCegarLoop]: Abstraction has 11340 states and 37894 transitions.
[2021-06-12 21:27:41,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11340 states and 37894 transitions.
[2021-06-12 21:27:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:41,363 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:41,363 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:41,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1150,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:41,564 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1708324419, now seen corresponding path program 149 times
[2021-06-12 21:27:41,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:41,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238161289]
[2021-06-12 21:27:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:41,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:41,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238161289]
[2021-06-12 21:27:41,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238161289] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:41,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232756410]
[2021-06-12 21:27:41,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:41,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:27:41,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:27:41,837 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:42,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232756410] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:42,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:42,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:27:42,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254526642]
[2021-06-12 21:27:42,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:27:42,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:42,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:27:42,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:27:42,567 INFO L87 Difference]: Start difference. First operand 11340 states and 37894 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:44,362 INFO L93 Difference]: Finished difference Result 17123 states and 55717 transitions.
[2021-06-12 21:27:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2021-06-12 21:27:44,362 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:44,388 INFO L225 Difference]: With dead ends: 17123
[2021-06-12 21:27:44,388 INFO L226 Difference]: Without dead ends: 17028
[2021-06-12 21:27:44,389 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1655.2ms TimeCoverageRelationStatistics Valid=569, Invalid=3213, Unknown=0, NotChecked=0, Total=3782
[2021-06-12 21:27:44,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17028 states.
[2021-06-12 21:27:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17028 to 11434.
[2021-06-12 21:27:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11434 states, 11433 states have (on average 3.3427796728767603) internal successors, (38218), 11433 states have internal predecessors, (38218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11434 states to 11434 states and 38218 transitions.
[2021-06-12 21:27:44,600 INFO L78 Accepts]: Start accepts. Automaton has 11434 states and 38218 transitions. Word has length 36
[2021-06-12 21:27:44,600 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:44,600 INFO L482 AbstractCegarLoop]: Abstraction has 11434 states and 38218 transitions.
[2021-06-12 21:27:44,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 11434 states and 38218 transitions.
[2021-06-12 21:27:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:44,613 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:44,613 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:44,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1159
[2021-06-12 21:27:44,813 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:44,813 INFO L82 PathProgramCache]: Analyzing trace with hash -990756419, now seen corresponding path program 150 times
[2021-06-12 21:27:44,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:44,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886791752]
[2021-06-12 21:27:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:45,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886791752]
[2021-06-12 21:27:45,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886791752] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144089237]
[2021-06-12 21:27:45,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:45,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-06-12 21:27:45,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:45,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:45,096 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:45,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144089237] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:45,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:45,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:27:45,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020367544]
[2021-06-12 21:27:45,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:45,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:45,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:45,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:45,811 INFO L87 Difference]: Start difference. First operand 11434 states and 38218 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:48,334 INFO L93 Difference]: Finished difference Result 21041 states and 67818 transitions.
[2021-06-12 21:27:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-06-12 21:27:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:48,368 INFO L225 Difference]: With dead ends: 21041
[2021-06-12 21:27:48,369 INFO L226 Difference]: Without dead ends: 20903
[2021-06-12 21:27:48,369 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1941.5ms TimeCoverageRelationStatistics Valid=682, Invalid=3350, Unknown=0, NotChecked=0, Total=4032
[2021-06-12 21:27:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20903 states.
[2021-06-12 21:27:48,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20903 to 11352.
[2021-06-12 21:27:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11352 states, 11351 states have (on average 3.3419082019205355) internal successors, (37934), 11351 states have internal predecessors, (37934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11352 states to 11352 states and 37934 transitions.
[2021-06-12 21:27:48,645 INFO L78 Accepts]: Start accepts. Automaton has 11352 states and 37934 transitions. Word has length 36
[2021-06-12 21:27:48,645 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:48,645 INFO L482 AbstractCegarLoop]: Abstraction has 11352 states and 37934 transitions.
[2021-06-12 21:27:48,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 37934 transitions.
[2021-06-12 21:27:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:48,659 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:48,659 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:48,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1169
[2021-06-12 21:27:48,859 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash -364592279, now seen corresponding path program 151 times
[2021-06-12 21:27:48,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:48,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276409276]
[2021-06-12 21:27:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:49,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:49,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276409276]
[2021-06-12 21:27:49,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276409276] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:49,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092959176]
[2021-06-12 21:27:49,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:49,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:49,134 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:49,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092959176] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:49,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:49,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:27:49,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749690399]
[2021-06-12 21:27:49,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:27:49,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:27:49,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:27:49,911 INFO L87 Difference]: Start difference. First operand 11352 states and 37934 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:51,861 INFO L93 Difference]: Finished difference Result 18599 states and 61165 transitions.
[2021-06-12 21:27:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-06-12 21:27:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:51,893 INFO L225 Difference]: With dead ends: 18599
[2021-06-12 21:27:51,893 INFO L226 Difference]: Without dead ends: 18504
[2021-06-12 21:27:51,893 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1726.4ms TimeCoverageRelationStatistics Valid=615, Invalid=3417, Unknown=0, NotChecked=0, Total=4032
[2021-06-12 21:27:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18504 states.
[2021-06-12 21:27:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18504 to 11370.
[2021-06-12 21:27:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11370 states, 11369 states have (on average 3.3415427918022695) internal successors, (37990), 11369 states have internal predecessors, (37990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 37990 transitions.
[2021-06-12 21:27:52,137 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 37990 transitions. Word has length 36
[2021-06-12 21:27:52,137 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:52,137 INFO L482 AbstractCegarLoop]: Abstraction has 11370 states and 37990 transitions.
[2021-06-12 21:27:52,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 37990 transitions.
[2021-06-12 21:27:52,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:52,150 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:52,150 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:52,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1181,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:52,351 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:52,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:52,351 INFO L82 PathProgramCache]: Analyzing trace with hash 352975721, now seen corresponding path program 152 times
[2021-06-12 21:27:52,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:52,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311741472]
[2021-06-12 21:27:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:52,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:52,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311741472]
[2021-06-12 21:27:52,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311741472] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:52,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179523692]
[2021-06-12 21:27:52,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:52,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:27:52,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:52,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:27:52,628 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:53,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179523692] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:53,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:53,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:27:53,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057836052]
[2021-06-12 21:27:53,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:27:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:27:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:27:53,290 INFO L87 Difference]: Start difference. First operand 11370 states and 37990 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:55,522 INFO L93 Difference]: Finished difference Result 22611 states and 73757 transitions.
[2021-06-12 21:27:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2021-06-12 21:27:55,522 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:55,557 INFO L225 Difference]: With dead ends: 22611
[2021-06-12 21:27:55,558 INFO L226 Difference]: Without dead ends: 22473
[2021-06-12 21:27:55,558 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 1930.3ms TimeCoverageRelationStatistics Valid=703, Invalid=3587, Unknown=0, NotChecked=0, Total=4290
[2021-06-12 21:27:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22473 states.
[2021-06-12 21:27:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22473 to 10986.
[2021-06-12 21:27:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10986 states, 10985 states have (on average 3.3325443786982247) internal successors, (36608), 10985 states have internal predecessors, (36608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 36608 transitions.
[2021-06-12 21:27:55,815 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 36608 transitions. Word has length 36
[2021-06-12 21:27:55,815 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:55,815 INFO L482 AbstractCegarLoop]: Abstraction has 10986 states and 36608 transitions.
[2021-06-12 21:27:55,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 36608 transitions.
[2021-06-12 21:27:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:55,828 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:55,828 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:56,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1193
[2021-06-12 21:27:56,028 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:56,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:56,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1466234195, now seen corresponding path program 153 times
[2021-06-12 21:27:56,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:56,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376734329]
[2021-06-12 21:27:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:56,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:56,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376734329]
[2021-06-12 21:27:56,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376734329] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:56,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402690779]
[2021-06-12 21:27:56,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:56,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2021-06-12 21:27:56,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:56,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:27:56,309 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:27:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:57,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402690779] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:57,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:27:57,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:27:57,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363816853]
[2021-06-12 21:27:57,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:27:57,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:27:57,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:27:57,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:27:57,031 INFO L87 Difference]: Start difference. First operand 10986 states and 36608 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:27:58,761 INFO L93 Difference]: Finished difference Result 17305 states and 57173 transitions.
[2021-06-12 21:27:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-06-12 21:27:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:27:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:27:58,788 INFO L225 Difference]: With dead ends: 17305
[2021-06-12 21:27:58,789 INFO L226 Difference]: Without dead ends: 17185
[2021-06-12 21:27:58,789 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1690.2ms TimeCoverageRelationStatistics Valid=529, Invalid=3131, Unknown=0, NotChecked=0, Total=3660
[2021-06-12 21:27:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17185 states.
[2021-06-12 21:27:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17185 to 10982.
[2021-06-12 21:27:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10982 states, 10981 states have (on average 3.332665513159093) internal successors, (36596), 10981 states have internal predecessors, (36596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 36596 transitions.
[2021-06-12 21:27:58,992 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 36596 transitions. Word has length 36
[2021-06-12 21:27:58,992 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:27:58,992 INFO L482 AbstractCegarLoop]: Abstraction has 10982 states and 36596 transitions.
[2021-06-12 21:27:58,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:27:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 36596 transitions.
[2021-06-12 21:27:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:27:59,004 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:27:59,004 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:27:59,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1205,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:59,205 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:27:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:27:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash 495290557, now seen corresponding path program 154 times
[2021-06-12 21:27:59,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:27:59,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052556686]
[2021-06-12 21:27:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:27:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:27:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:27:59,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:27:59,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052556686]
[2021-06-12 21:27:59,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052556686] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:27:59,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800112225]
[2021-06-12 21:27:59,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:27:59,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:27:59,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:27:59,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:27:59,475 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:00,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800112225] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:00,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:00,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:28:00,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270778555]
[2021-06-12 21:28:00,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:00,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:00,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:00,206 INFO L87 Difference]: Start difference. First operand 10982 states and 36596 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:01,246 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25
[2021-06-12 21:28:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:02,851 INFO L93 Difference]: Finished difference Result 18391 states and 60597 transitions.
[2021-06-12 21:28:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-06-12 21:28:02,852 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:02,879 INFO L225 Difference]: With dead ends: 18391
[2021-06-12 21:28:02,879 INFO L226 Difference]: Without dead ends: 18271
[2021-06-12 21:28:02,879 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 2214.3ms TimeCoverageRelationStatistics Valid=695, Invalid=3465, Unknown=0, NotChecked=0, Total=4160
[2021-06-12 21:28:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18271 states.
[2021-06-12 21:28:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18271 to 11132.
[2021-06-12 21:28:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11132 states, 11131 states have (on average 3.3326745126224058) internal successors, (37096), 11131 states have internal predecessors, (37096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11132 states to 11132 states and 37096 transitions.
[2021-06-12 21:28:03,098 INFO L78 Accepts]: Start accepts. Automaton has 11132 states and 37096 transitions. Word has length 36
[2021-06-12 21:28:03,098 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:03,098 INFO L482 AbstractCegarLoop]: Abstraction has 11132 states and 37096 transitions.
[2021-06-12 21:28:03,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 11132 states and 37096 transitions.
[2021-06-12 21:28:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:03,111 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:03,111 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:03,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1217,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:03,311 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:03,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1805416575, now seen corresponding path program 155 times
[2021-06-12 21:28:03,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:03,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087222917]
[2021-06-12 21:28:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:03,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:03,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087222917]
[2021-06-12 21:28:03,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087222917] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:03,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630787661]
[2021-06-12 21:28:03,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:03,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:28:03,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:03,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-06-12 21:28:03,672 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:04,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630787661] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:04,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:04,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:28:04,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138229357]
[2021-06-12 21:28:04,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:04,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:04,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:04,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:04,230 INFO L87 Difference]: Start difference. First operand 11132 states and 37096 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:07,233 INFO L93 Difference]: Finished difference Result 20236 states and 64588 transitions.
[2021-06-12 21:28:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2021-06-12 21:28:07,234 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:07,266 INFO L225 Difference]: With dead ends: 20236
[2021-06-12 21:28:07,267 INFO L226 Difference]: Without dead ends: 20147
[2021-06-12 21:28:07,267 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2677.8ms TimeCoverageRelationStatistics Valid=1011, Invalid=4841, Unknown=0, NotChecked=0, Total=5852
[2021-06-12 21:28:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20147 states.
[2021-06-12 21:28:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20147 to 11326.
[2021-06-12 21:28:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11326 states, 11325 states have (on average 3.3333333333333335) internal successors, (37750), 11325 states have internal predecessors, (37750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11326 states to 11326 states and 37750 transitions.
[2021-06-12 21:28:07,506 INFO L78 Accepts]: Start accepts. Automaton has 11326 states and 37750 transitions. Word has length 36
[2021-06-12 21:28:07,506 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:07,506 INFO L482 AbstractCegarLoop]: Abstraction has 11326 states and 37750 transitions.
[2021-06-12 21:28:07,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11326 states and 37750 transitions.
[2021-06-12 21:28:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:07,519 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:07,519 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:07,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1229
[2021-06-12 21:28:07,720 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:07,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1309634939, now seen corresponding path program 156 times
[2021-06-12 21:28:07,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:07,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118421654]
[2021-06-12 21:28:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:08,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:08,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118421654]
[2021-06-12 21:28:08,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118421654] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:08,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238847171]
[2021-06-12 21:28:08,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:08,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:28:08,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:08,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:28:08,041 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:08,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238847171] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:08,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:08,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:28:08,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494493055]
[2021-06-12 21:28:08,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:28:08,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:08,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:28:08,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:28:08,627 INFO L87 Difference]: Start difference. First operand 11326 states and 37750 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:14,224 INFO L93 Difference]: Finished difference Result 16605 states and 53248 transitions.
[2021-06-12 21:28:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2021-06-12 21:28:14,224 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:14,249 INFO L225 Difference]: With dead ends: 16605
[2021-06-12 21:28:14,250 INFO L226 Difference]: Without dead ends: 16424
[2021-06-12 21:28:14,250 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4088 ImplicationChecksByTransitivity, 4418.4ms TimeCoverageRelationStatistics Valid=1264, Invalid=10726, Unknown=0, NotChecked=0, Total=11990
[2021-06-12 21:28:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16424 states.
[2021-06-12 21:28:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 11368.
[2021-06-12 21:28:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11368 states, 11367 states have (on average 3.3340371250109966) internal successors, (37898), 11367 states have internal predecessors, (37898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11368 states to 11368 states and 37898 transitions.
[2021-06-12 21:28:14,484 INFO L78 Accepts]: Start accepts. Automaton has 11368 states and 37898 transitions. Word has length 36
[2021-06-12 21:28:14,484 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:14,484 INFO L482 AbstractCegarLoop]: Abstraction has 11368 states and 37898 transitions.
[2021-06-12 21:28:14,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 11368 states and 37898 transitions.
[2021-06-12 21:28:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:14,498 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:14,498 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:14,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1233,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:14,698 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:14,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1498102399, now seen corresponding path program 157 times
[2021-06-12 21:28:14,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:14,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768612663]
[2021-06-12 21:28:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:14,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:14,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768612663]
[2021-06-12 21:28:14,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768612663] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:14,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879665849]
[2021-06-12 21:28:14,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:14,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-06-12 21:28:14,998 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:15,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879665849] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:15,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:15,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:28:15,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213496369]
[2021-06-12 21:28:15,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:28:15,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:28:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:28:15,569 INFO L87 Difference]: Start difference. First operand 11368 states and 37898 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:20,928 INFO L93 Difference]: Finished difference Result 21161 states and 67108 transitions.
[2021-06-12 21:28:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2021-06-12 21:28:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:20,958 INFO L225 Difference]: With dead ends: 21161
[2021-06-12 21:28:20,958 INFO L226 Difference]: Without dead ends: 20892
[2021-06-12 21:28:20,959 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 4547.0ms TimeCoverageRelationStatistics Valid=2139, Invalid=10743, Unknown=0, NotChecked=0, Total=12882
[2021-06-12 21:28:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20892 states.
[2021-06-12 21:28:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20892 to 11410.
[2021-06-12 21:28:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11410 states, 11409 states have (on average 3.3350863353492857) internal successors, (38050), 11409 states have internal predecessors, (38050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11410 states to 11410 states and 38050 transitions.
[2021-06-12 21:28:21,208 INFO L78 Accepts]: Start accepts. Automaton has 11410 states and 38050 transitions. Word has length 36
[2021-06-12 21:28:21,208 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:21,208 INFO L482 AbstractCegarLoop]: Abstraction has 11410 states and 38050 transitions.
[2021-06-12 21:28:21,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:21,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11410 states and 38050 transitions.
[2021-06-12 21:28:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:21,222 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:21,222 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:21,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1237
[2021-06-12 21:28:21,423 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash 963545901, now seen corresponding path program 158 times
[2021-06-12 21:28:21,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:21,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593398781]
[2021-06-12 21:28:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:21,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:21,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593398781]
[2021-06-12 21:28:21,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593398781] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:21,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777067279]
[2021-06-12 21:28:21,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:21,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:28:21,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:21,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:28:21,832 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:22,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777067279] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:22,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:22,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34
[2021-06-12 21:28:22,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794873335]
[2021-06-12 21:28:22,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:22,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:22,401 INFO L87 Difference]: Start difference. First operand 11410 states and 38050 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:25,638 INFO L93 Difference]: Finished difference Result 21786 states and 69890 transitions.
[2021-06-12 21:28:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2021-06-12 21:28:25,639 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:25,672 INFO L225 Difference]: With dead ends: 21786
[2021-06-12 21:28:25,672 INFO L226 Difference]: Without dead ends: 21660
[2021-06-12 21:28:25,672 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 2870.9ms TimeCoverageRelationStatistics Valid=1139, Invalid=5341, Unknown=0, NotChecked=0, Total=6480
[2021-06-12 21:28:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21660 states.
[2021-06-12 21:28:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21660 to 11460.
[2021-06-12 21:28:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11460 states, 11459 states have (on average 3.3358931843965443) internal successors, (38226), 11459 states have internal predecessors, (38226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11460 states to 11460 states and 38226 transitions.
[2021-06-12 21:28:25,925 INFO L78 Accepts]: Start accepts. Automaton has 11460 states and 38226 transitions. Word has length 36
[2021-06-12 21:28:25,925 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:25,925 INFO L482 AbstractCegarLoop]: Abstraction has 11460 states and 38226 transitions.
[2021-06-12 21:28:25,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11460 states and 38226 transitions.
[2021-06-12 21:28:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:25,938 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:25,938 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:26,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1241,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:26,139 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:26,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1459327537, now seen corresponding path program 159 times
[2021-06-12 21:28:26,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:26,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562193014]
[2021-06-12 21:28:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:26,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:26,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562193014]
[2021-06-12 21:28:26,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562193014] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:26,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714546550]
[2021-06-12 21:28:26,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:26,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:28:26,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:26,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:28:26,507 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:27,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714546550] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:27,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:27,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:28:27,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394717246]
[2021-06-12 21:28:27,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:28:27,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:27,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:28:27,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:28:27,054 INFO L87 Difference]: Start difference. First operand 11460 states and 38226 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:32,147 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48
[2021-06-12 21:28:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:32,736 INFO L93 Difference]: Finished difference Result 17579 states and 56141 transitions.
[2021-06-12 21:28:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states.
[2021-06-12 21:28:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:32,762 INFO L225 Difference]: With dead ends: 17579
[2021-06-12 21:28:32,762 INFO L226 Difference]: Without dead ends: 17398
[2021-06-12 21:28:32,762 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4363 ImplicationChecksByTransitivity, 4732.2ms TimeCoverageRelationStatistics Valid=1444, Invalid=11438, Unknown=0, NotChecked=0, Total=12882
[2021-06-12 21:28:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17398 states.
[2021-06-12 21:28:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17398 to 11498.
[2021-06-12 21:28:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11498 states, 11497 states have (on average 3.337566321649126) internal successors, (38372), 11497 states have internal predecessors, (38372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11498 states to 11498 states and 38372 transitions.
[2021-06-12 21:28:32,968 INFO L78 Accepts]: Start accepts. Automaton has 11498 states and 38372 transitions. Word has length 36
[2021-06-12 21:28:32,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:32,968 INFO L482 AbstractCegarLoop]: Abstraction has 11498 states and 38372 transitions.
[2021-06-12 21:28:32,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 11498 states and 38372 transitions.
[2021-06-12 21:28:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:32,981 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:32,981 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:33,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1248
[2021-06-12 21:28:33,182 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:33,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1813202505, now seen corresponding path program 160 times
[2021-06-12 21:28:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:33,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486684310]
[2021-06-12 21:28:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:33,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:33,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486684310]
[2021-06-12 21:28:33,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486684310] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:33,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423795396]
[2021-06-12 21:28:33,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:33,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:28:33,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:33,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:28:33,509 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:34,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423795396] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:34,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:34,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:28:34,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752498211]
[2021-06-12 21:28:34,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:34,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:34,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:34,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:34,109 INFO L87 Difference]: Start difference. First operand 11498 states and 38372 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:35,714 INFO L93 Difference]: Finished difference Result 13597 states and 44563 transitions.
[2021-06-12 21:28:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-06-12 21:28:35,714 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:35,734 INFO L225 Difference]: With dead ends: 13597
[2021-06-12 21:28:35,734 INFO L226 Difference]: Without dead ends: 13502
[2021-06-12 21:28:35,734 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1527.9ms TimeCoverageRelationStatistics Valid=418, Invalid=2444, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:28:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13502 states.
[2021-06-12 21:28:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13502 to 11524.
[2021-06-12 21:28:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11524 states, 11523 states have (on average 3.337498915213052) internal successors, (38458), 11523 states have internal predecessors, (38458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11524 states to 11524 states and 38458 transitions.
[2021-06-12 21:28:35,913 INFO L78 Accepts]: Start accepts. Automaton has 11524 states and 38458 transitions. Word has length 36
[2021-06-12 21:28:35,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:35,913 INFO L482 AbstractCegarLoop]: Abstraction has 11524 states and 38458 transitions.
[2021-06-12 21:28:35,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 11524 states and 38458 transitions.
[2021-06-12 21:28:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:35,927 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:35,927 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:36,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1252,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:36,127 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:36,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1560062651, now seen corresponding path program 161 times
[2021-06-12 21:28:36,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:36,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207099375]
[2021-06-12 21:28:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:36,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:36,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207099375]
[2021-06-12 21:28:36,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207099375] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:36,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264461152]
[2021-06-12 21:28:36,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:36,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:28:36,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:36,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:28:36,469 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:37,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264461152] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:37,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:37,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:28:37,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029868784]
[2021-06-12 21:28:37,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:37,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:37,023 INFO L87 Difference]: Start difference. First operand 11524 states and 38458 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:38,231 INFO L93 Difference]: Finished difference Result 15426 states and 50491 transitions.
[2021-06-12 21:28:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2021-06-12 21:28:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:38,252 INFO L225 Difference]: With dead ends: 15426
[2021-06-12 21:28:38,253 INFO L226 Difference]: Without dead ends: 15346
[2021-06-12 21:28:38,253 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1220.4ms TimeCoverageRelationStatistics Valid=352, Invalid=1810, Unknown=0, NotChecked=0, Total=2162
[2021-06-12 21:28:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states.
[2021-06-12 21:28:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 11520.
[2021-06-12 21:28:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11520 states, 11519 states have (on average 3.3367479815956247) internal successors, (38436), 11519 states have internal predecessors, (38436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11520 states to 11520 states and 38436 transitions.
[2021-06-12 21:28:38,446 INFO L78 Accepts]: Start accepts. Automaton has 11520 states and 38436 transitions. Word has length 36
[2021-06-12 21:28:38,446 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:38,446 INFO L482 AbstractCegarLoop]: Abstraction has 11520 states and 38436 transitions.
[2021-06-12 21:28:38,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11520 states and 38436 transitions.
[2021-06-12 21:28:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:38,460 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:38,460 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:38,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1259
[2021-06-12 21:28:38,669 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1630172687, now seen corresponding path program 162 times
[2021-06-12 21:28:38,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:38,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330115296]
[2021-06-12 21:28:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:39,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:39,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330115296]
[2021-06-12 21:28:39,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330115296] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:39,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960687626]
[2021-06-12 21:28:39,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:39,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:28:39,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:39,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:28:39,050 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:39,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960687626] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:39,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:39,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:28:39,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705064518]
[2021-06-12 21:28:39,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:28:39,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:28:39,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:28:39,586 INFO L87 Difference]: Start difference. First operand 11520 states and 38436 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:41,251 INFO L93 Difference]: Finished difference Result 16762 states and 55010 transitions.
[2021-06-12 21:28:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-06-12 21:28:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:41,277 INFO L225 Difference]: With dead ends: 16762
[2021-06-12 21:28:41,277 INFO L226 Difference]: Without dead ends: 16642
[2021-06-12 21:28:41,278 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1543.7ms TimeCoverageRelationStatistics Valid=444, Invalid=2106, Unknown=0, NotChecked=0, Total=2550
[2021-06-12 21:28:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16642 states.
[2021-06-12 21:28:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16642 to 11524.
[2021-06-12 21:28:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11524 states, 11523 states have (on average 3.3366310856547776) internal successors, (38448), 11523 states have internal predecessors, (38448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11524 states to 11524 states and 38448 transitions.
[2021-06-12 21:28:41,488 INFO L78 Accepts]: Start accepts. Automaton has 11524 states and 38448 transitions. Word has length 36
[2021-06-12 21:28:41,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:41,488 INFO L482 AbstractCegarLoop]: Abstraction has 11524 states and 38448 transitions.
[2021-06-12 21:28:41,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 11524 states and 38448 transitions.
[2021-06-12 21:28:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:41,502 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:41,502 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:41,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1263,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:41,702 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:41,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1091873285, now seen corresponding path program 163 times
[2021-06-12 21:28:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:41,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678225064]
[2021-06-12 21:28:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:41,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:41,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678225064]
[2021-06-12 21:28:41,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678225064] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:41,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107221239]
[2021-06-12 21:28:41,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:41,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:28:41,996 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:42,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107221239] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:42,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:42,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:28:42,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815458968]
[2021-06-12 21:28:42,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:28:42,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:42,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:28:42,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:28:42,542 INFO L87 Difference]: Start difference. First operand 11524 states and 38448 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:44,961 INFO L93 Difference]: Finished difference Result 13028 states and 42581 transitions.
[2021-06-12 21:28:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:28:44,961 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:44,981 INFO L225 Difference]: With dead ends: 13028
[2021-06-12 21:28:44,981 INFO L226 Difference]: Without dead ends: 12867
[2021-06-12 21:28:44,981 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 2278.0ms TimeCoverageRelationStatistics Valid=700, Invalid=4702, Unknown=0, NotChecked=0, Total=5402
[2021-06-12 21:28:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states.
[2021-06-12 21:28:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 11544.
[2021-06-12 21:28:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 11543 states have (on average 3.335614658234428) internal successors, (38503), 11543 states have internal predecessors, (38503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 38503 transitions.
[2021-06-12 21:28:45,160 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 38503 transitions. Word has length 36
[2021-06-12 21:28:45,161 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:45,161 INFO L482 AbstractCegarLoop]: Abstraction has 11544 states and 38503 transitions.
[2021-06-12 21:28:45,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 38503 transitions.
[2021-06-12 21:28:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:45,173 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:45,174 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:45,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1270,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:45,374 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:45,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:45,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2084366849, now seen corresponding path program 164 times
[2021-06-12 21:28:45,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:45,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63517461]
[2021-06-12 21:28:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:45,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:45,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63517461]
[2021-06-12 21:28:45,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63517461] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:45,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719016736]
[2021-06-12 21:28:45,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:45,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:28:45,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:45,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:28:45,659 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:46,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719016736] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:46,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:46,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:28:46,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638761661]
[2021-06-12 21:28:46,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:28:46,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:46,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:28:46,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:28:46,164 INFO L87 Difference]: Start difference. First operand 11544 states and 38503 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:49,231 INFO L93 Difference]: Finished difference Result 15764 states and 50798 transitions.
[2021-06-12 21:28:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2021-06-12 21:28:49,232 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:49,256 INFO L225 Difference]: With dead ends: 15764
[2021-06-12 21:28:49,256 INFO L226 Difference]: Without dead ends: 15568
[2021-06-12 21:28:49,257 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2115 ImplicationChecksByTransitivity, 2517.8ms TimeCoverageRelationStatistics Valid=939, Invalid=6033, Unknown=0, NotChecked=0, Total=6972
[2021-06-12 21:28:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15568 states.
[2021-06-12 21:28:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15568 to 11569.
[2021-06-12 21:28:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11568 states have (on average 3.3374827109266945) internal successors, (38608), 11568 states have internal predecessors, (38608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 38608 transitions.
[2021-06-12 21:28:49,507 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 38608 transitions. Word has length 36
[2021-06-12 21:28:49,507 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:49,507 INFO L482 AbstractCegarLoop]: Abstraction has 11569 states and 38608 transitions.
[2021-06-12 21:28:49,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 38608 transitions.
[2021-06-12 21:28:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:49,521 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:49,521 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:49,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1274,164 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:49,728 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash -866868307, now seen corresponding path program 165 times
[2021-06-12 21:28:49,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:49,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194088965]
[2021-06-12 21:28:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:49,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:49,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194088965]
[2021-06-12 21:28:49,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194088965] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:49,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978447573]
[2021-06-12 21:28:49,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:50,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:28:50,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:50,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:28:50,020 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:50,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978447573] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:50,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:50,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:28:50,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115482369]
[2021-06-12 21:28:50,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:28:50,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:50,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:28:50,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:28:50,534 INFO L87 Difference]: Start difference. First operand 11569 states and 38608 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:53,450 INFO L93 Difference]: Finished difference Result 14166 states and 46091 transitions.
[2021-06-12 21:28:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2021-06-12 21:28:53,450 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:53,470 INFO L225 Difference]: With dead ends: 14166
[2021-06-12 21:28:53,470 INFO L226 Difference]: Without dead ends: 13970
[2021-06-12 21:28:53,471 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 2251.9ms TimeCoverageRelationStatistics Valid=792, Invalid=5060, Unknown=0, NotChecked=0, Total=5852
[2021-06-12 21:28:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13970 states.
[2021-06-12 21:28:53,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13970 to 11583.
[2021-06-12 21:28:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11583 states, 11582 states have (on average 3.337247452944224) internal successors, (38652), 11582 states have internal predecessors, (38652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11583 states to 11583 states and 38652 transitions.
[2021-06-12 21:28:53,657 INFO L78 Accepts]: Start accepts. Automaton has 11583 states and 38652 transitions. Word has length 36
[2021-06-12 21:28:53,657 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:53,657 INFO L482 AbstractCegarLoop]: Abstraction has 11583 states and 38652 transitions.
[2021-06-12 21:28:53,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11583 states and 38652 transitions.
[2021-06-12 21:28:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:53,671 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:53,671 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:53,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1278
[2021-06-12 21:28:53,871 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1898400187, now seen corresponding path program 166 times
[2021-06-12 21:28:53,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:53,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438672522]
[2021-06-12 21:28:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:54,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:54,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438672522]
[2021-06-12 21:28:54,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438672522] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:54,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150525057]
[2021-06-12 21:28:54,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:54,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:28:54,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:54,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:28:54,231 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:54,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150525057] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:54,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:54,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:28:54,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71649694]
[2021-06-12 21:28:54,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:54,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:54,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:54,732 INFO L87 Difference]: Start difference. First operand 11583 states and 38652 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:56,620 INFO L93 Difference]: Finished difference Result 15912 states and 52023 transitions.
[2021-06-12 21:28:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2021-06-12 21:28:56,621 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:56,646 INFO L225 Difference]: With dead ends: 15912
[2021-06-12 21:28:56,646 INFO L226 Difference]: Without dead ends: 15743
[2021-06-12 21:28:56,646 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1796.6ms TimeCoverageRelationStatistics Valid=504, Invalid=3036, Unknown=0, NotChecked=0, Total=3540
[2021-06-12 21:28:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15743 states.
[2021-06-12 21:28:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15743 to 11592.
[2021-06-12 21:28:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11592 states, 11591 states have (on average 3.337934604434475) internal successors, (38690), 11591 states have internal predecessors, (38690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 38690 transitions.
[2021-06-12 21:28:56,853 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 38690 transitions. Word has length 36
[2021-06-12 21:28:56,853 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:56,853 INFO L482 AbstractCegarLoop]: Abstraction has 11592 states and 38690 transitions.
[2021-06-12 21:28:56,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 38690 transitions.
[2021-06-12 21:28:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:56,867 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:56,867 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:57,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1282,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:57,067 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1499639123, now seen corresponding path program 167 times
[2021-06-12 21:28:57,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:57,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736826477]
[2021-06-12 21:28:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:28:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:57,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:28:57,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736826477]
[2021-06-12 21:28:57,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736826477] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:57,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801482323]
[2021-06-12 21:28:57,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:28:57,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:28:57,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:28:57,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:28:57,317 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:28:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:28:57,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801482323] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:28:57,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:28:57,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:28:57,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066223153]
[2021-06-12 21:28:57,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:28:57,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:28:57,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:28:57,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:28:57,830 INFO L87 Difference]: Start difference. First operand 11592 states and 38690 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:28:59,465 INFO L93 Difference]: Finished difference Result 16908 states and 55375 transitions.
[2021-06-12 21:28:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-06-12 21:28:59,465 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:28:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:28:59,492 INFO L225 Difference]: With dead ends: 16908
[2021-06-12 21:28:59,492 INFO L226 Difference]: Without dead ends: 16828
[2021-06-12 21:28:59,492 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1415.8ms TimeCoverageRelationStatistics Valid=573, Invalid=2619, Unknown=0, NotChecked=0, Total=3192
[2021-06-12 21:28:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16828 states.
[2021-06-12 21:28:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16828 to 11611.
[2021-06-12 21:28:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11611 states, 11610 states have (on average 3.337639965546942) internal successors, (38750), 11610 states have internal predecessors, (38750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11611 states to 11611 states and 38750 transitions.
[2021-06-12 21:28:59,722 INFO L78 Accepts]: Start accepts. Automaton has 11611 states and 38750 transitions. Word has length 36
[2021-06-12 21:28:59,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:28:59,722 INFO L482 AbstractCegarLoop]: Abstraction has 11611 states and 38750 transitions.
[2021-06-12 21:28:59,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:28:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11611 states and 38750 transitions.
[2021-06-12 21:28:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:28:59,735 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:28:59,735 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:28:59,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1287
[2021-06-12 21:28:59,936 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:28:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:28:59,936 INFO L82 PathProgramCache]: Analyzing trace with hash -615772479, now seen corresponding path program 168 times
[2021-06-12 21:28:59,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:28:59,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341767674]
[2021-06-12 21:28:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:28:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:00,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:00,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341767674]
[2021-06-12 21:29:00,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341767674] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:00,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984480216]
[2021-06-12 21:29:00,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:00,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-12 21:29:00,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:00,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:29:00,311 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:00,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984480216] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:00,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:00,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:29:00,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388770667]
[2021-06-12 21:29:00,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:29:00,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:29:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:29:00,897 INFO L87 Difference]: Start difference. First operand 11611 states and 38750 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:05,038 INFO L93 Difference]: Finished difference Result 14311 states and 46258 transitions.
[2021-06-12 21:29:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2021-06-12 21:29:05,038 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:05,058 INFO L225 Difference]: With dead ends: 14311
[2021-06-12 21:29:05,058 INFO L226 Difference]: Without dead ends: 14035
[2021-06-12 21:29:05,059 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 3172.5ms TimeCoverageRelationStatistics Valid=857, Invalid=7153, Unknown=0, NotChecked=0, Total=8010
[2021-06-12 21:29:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14035 states.
[2021-06-12 21:29:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14035 to 11725.
[2021-06-12 21:29:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11725 states, 11724 states have (on average 3.336148072330263) internal successors, (39113), 11724 states have internal predecessors, (39113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:05,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11725 states to 11725 states and 39113 transitions.
[2021-06-12 21:29:05,249 INFO L78 Accepts]: Start accepts. Automaton has 11725 states and 39113 transitions. Word has length 36
[2021-06-12 21:29:05,249 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:05,249 INFO L482 AbstractCegarLoop]: Abstraction has 11725 states and 39113 transitions.
[2021-06-12 21:29:05,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11725 states and 39113 transitions.
[2021-06-12 21:29:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:05,262 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:05,262 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:05,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1301,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:05,463 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:05,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1770766743, now seen corresponding path program 169 times
[2021-06-12 21:29:05,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:05,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114358373]
[2021-06-12 21:29:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:05,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:05,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114358373]
[2021-06-12 21:29:05,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114358373] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:05,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218957190]
[2021-06-12 21:29:05,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:05,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:29:05,793 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:06,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218957190] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:06,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:06,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37
[2021-06-12 21:29:06,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091855784]
[2021-06-12 21:29:06,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:29:06,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:06,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:29:06,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:29:06,380 INFO L87 Difference]: Start difference. First operand 11725 states and 39113 transitions. Second operand has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:09,540 INFO L93 Difference]: Finished difference Result 13657 states and 44373 transitions.
[2021-06-12 21:29:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2021-06-12 21:29:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:09,561 INFO L225 Difference]: With dead ends: 13657
[2021-06-12 21:29:09,561 INFO L226 Difference]: Without dead ends: 13442
[2021-06-12 21:29:09,562 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 2730.0ms TimeCoverageRelationStatistics Valid=963, Invalid=6009, Unknown=0, NotChecked=0, Total=6972
[2021-06-12 21:29:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13442 states.
[2021-06-12 21:29:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13442 to 11763.
[2021-06-12 21:29:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11763 states, 11762 states have (on average 3.335062064274783) internal successors, (39227), 11762 states have internal predecessors, (39227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11763 states to 11763 states and 39227 transitions.
[2021-06-12 21:29:09,773 INFO L78 Accepts]: Start accepts. Automaton has 11763 states and 39227 transitions. Word has length 36
[2021-06-12 21:29:09,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:09,774 INFO L482 AbstractCegarLoop]: Abstraction has 11763 states and 39227 transitions.
[2021-06-12 21:29:09,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 37 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 11763 states and 39227 transitions.
[2021-06-12 21:29:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:09,788 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:09,788 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:09,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1305
[2021-06-12 21:29:09,988 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:09,988 INFO L82 PathProgramCache]: Analyzing trace with hash 617313897, now seen corresponding path program 170 times
[2021-06-12 21:29:09,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:09,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478498809]
[2021-06-12 21:29:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:10,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:10,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478498809]
[2021-06-12 21:29:10,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478498809] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:10,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557856605]
[2021-06-12 21:29:10,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:10,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:29:10,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:29:10,350 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:10,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557856605] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:10,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:10,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36
[2021-06-12 21:29:10,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067392488]
[2021-06-12 21:29:10,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:29:10,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:10,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:29:10,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:29:10,882 INFO L87 Difference]: Start difference. First operand 11763 states and 39227 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:16,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:16,110 INFO L93 Difference]: Finished difference Result 18226 states and 58244 transitions.
[2021-06-12 21:29:16,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2021-06-12 21:29:16,110 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:16,137 INFO L225 Difference]: With dead ends: 18226
[2021-06-12 21:29:16,138 INFO L226 Difference]: Without dead ends: 17945
[2021-06-12 21:29:16,138 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4376 ImplicationChecksByTransitivity, 4236.0ms TimeCoverageRelationStatistics Valid=1878, Invalid=11004, Unknown=0, NotChecked=0, Total=12882
[2021-06-12 21:29:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17945 states.
[2021-06-12 21:29:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17945 to 11807.
[2021-06-12 21:29:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11807 states, 11806 states have (on average 3.33703201761816) internal successors, (39397), 11806 states have internal predecessors, (39397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11807 states to 11807 states and 39397 transitions.
[2021-06-12 21:29:16,391 INFO L78 Accepts]: Start accepts. Automaton has 11807 states and 39397 transitions. Word has length 36
[2021-06-12 21:29:16,392 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:16,392 INFO L482 AbstractCegarLoop]: Abstraction has 11807 states and 39397 transitions.
[2021-06-12 21:29:16,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 11807 states and 39397 transitions.
[2021-06-12 21:29:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:16,406 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:16,406 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:16,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1309,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:16,606 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:16,607 INFO L82 PathProgramCache]: Analyzing trace with hash 408274093, now seen corresponding path program 171 times
[2021-06-12 21:29:16,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:16,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271071062]
[2021-06-12 21:29:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:16,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:16,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271071062]
[2021-06-12 21:29:16,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271071062] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:16,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156734963]
[2021-06-12 21:29:16,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:16,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:29:16,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:16,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:29:16,898 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:17,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156734963] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:17,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:17,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:29:17,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326535343]
[2021-06-12 21:29:17,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:29:17,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:17,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:29:17,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:29:17,410 INFO L87 Difference]: Start difference. First operand 11807 states and 39397 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:20,180 INFO L93 Difference]: Finished difference Result 14492 states and 47022 transitions.
[2021-06-12 21:29:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2021-06-12 21:29:20,180 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:20,202 INFO L225 Difference]: With dead ends: 14492
[2021-06-12 21:29:20,202 INFO L226 Difference]: Without dead ends: 14296
[2021-06-12 21:29:20,202 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 2266.3ms TimeCoverageRelationStatistics Valid=778, Invalid=5228, Unknown=0, NotChecked=0, Total=6006
[2021-06-12 21:29:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14296 states.
[2021-06-12 21:29:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14296 to 11793.
[2021-06-12 21:29:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 11792 states have (on average 3.337771370420624) internal successors, (39359), 11792 states have internal predecessors, (39359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 39359 transitions.
[2021-06-12 21:29:20,406 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 39359 transitions. Word has length 36
[2021-06-12 21:29:20,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:20,406 INFO L482 AbstractCegarLoop]: Abstraction has 11793 states and 39359 transitions.
[2021-06-12 21:29:20,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 39359 transitions.
[2021-06-12 21:29:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:20,420 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:20,420 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:20,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1313
[2021-06-12 21:29:20,620 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash -623257787, now seen corresponding path program 172 times
[2021-06-12 21:29:20,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:20,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562482053]
[2021-06-12 21:29:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:20,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:20,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562482053]
[2021-06-12 21:29:20,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562482053] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:20,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619880336]
[2021-06-12 21:29:20,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:20,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:29:20,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:20,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:29:20,960 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:21,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619880336] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:21,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:21,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:29:21,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770830561]
[2021-06-12 21:29:21,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:29:21,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:21,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:29:21,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:29:21,473 INFO L87 Difference]: Start difference. First operand 11793 states and 39359 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:23,614 INFO L93 Difference]: Finished difference Result 15520 states and 50803 transitions.
[2021-06-12 21:29:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2021-06-12 21:29:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:23,638 INFO L225 Difference]: With dead ends: 15520
[2021-06-12 21:29:23,638 INFO L226 Difference]: Without dead ends: 15351
[2021-06-12 21:29:23,638 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1810.7ms TimeCoverageRelationStatistics Valid=497, Invalid=3043, Unknown=0, NotChecked=0, Total=3540
[2021-06-12 21:29:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15351 states.
[2021-06-12 21:29:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15351 to 11783.
[2021-06-12 21:29:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11783 states, 11782 states have (on average 3.3372093023255816) internal successors, (39319), 11782 states have internal predecessors, (39319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11783 states to 11783 states and 39319 transitions.
[2021-06-12 21:29:23,846 INFO L78 Accepts]: Start accepts. Automaton has 11783 states and 39319 transitions. Word has length 36
[2021-06-12 21:29:23,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:23,846 INFO L482 AbstractCegarLoop]: Abstraction has 11783 states and 39319 transitions.
[2021-06-12 21:29:23,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11783 states and 39319 transitions.
[2021-06-12 21:29:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:23,860 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:23,860 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:24,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1317,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:24,061 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:24,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:24,061 INFO L82 PathProgramCache]: Analyzing trace with hash -592687571, now seen corresponding path program 173 times
[2021-06-12 21:29:24,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:24,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12268350]
[2021-06-12 21:29:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:24,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:24,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12268350]
[2021-06-12 21:29:24,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12268350] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:24,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748327071]
[2021-06-12 21:29:24,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:24,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2021-06-12 21:29:24,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:24,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:29:24,308 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:24,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748327071] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:24,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:24,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:29:24,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138753899]
[2021-06-12 21:29:24,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:29:24,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:24,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:29:24,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:29:24,919 INFO L87 Difference]: Start difference. First operand 11783 states and 39319 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:26,705 INFO L93 Difference]: Finished difference Result 21473 states and 70039 transitions.
[2021-06-12 21:29:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-12 21:29:26,705 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:26,739 INFO L225 Difference]: With dead ends: 21473
[2021-06-12 21:29:26,740 INFO L226 Difference]: Without dead ends: 21393
[2021-06-12 21:29:26,740 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1533.2ms TimeCoverageRelationStatistics Valid=632, Invalid=2908, Unknown=0, NotChecked=0, Total=3540
[2021-06-12 21:29:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states.
[2021-06-12 21:29:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 12081.
[2021-06-12 21:29:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12081 states, 12080 states have (on average 3.3411423841059604) internal successors, (40361), 12080 states have internal predecessors, (40361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12081 states to 12081 states and 40361 transitions.
[2021-06-12 21:29:26,999 INFO L78 Accepts]: Start accepts. Automaton has 12081 states and 40361 transitions. Word has length 36
[2021-06-12 21:29:26,999 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:26,999 INFO L482 AbstractCegarLoop]: Abstraction has 12081 states and 40361 transitions.
[2021-06-12 21:29:26,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12081 states and 40361 transitions.
[2021-06-12 21:29:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:27,013 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:27,013 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:27,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1322
[2021-06-12 21:29:27,214 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:27,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:27,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1033360067, now seen corresponding path program 174 times
[2021-06-12 21:29:27,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:27,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587980841]
[2021-06-12 21:29:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:27,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:27,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587980841]
[2021-06-12 21:29:27,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587980841] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:27,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843166013]
[2021-06-12 21:29:27,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:27,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:29:27,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:27,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-06-12 21:29:27,543 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:28,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843166013] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:28,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:28,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:29:28,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146498035]
[2021-06-12 21:29:28,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:29:28,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:28,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:29:28,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:29:28,050 INFO L87 Difference]: Start difference. First operand 12081 states and 40361 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:33,031 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48
[2021-06-12 21:29:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:33,495 INFO L93 Difference]: Finished difference Result 21275 states and 67476 transitions.
[2021-06-12 21:29:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states.
[2021-06-12 21:29:33,495 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:33,526 INFO L225 Difference]: With dead ends: 21275
[2021-06-12 21:29:33,526 INFO L226 Difference]: Without dead ends: 21094
[2021-06-12 21:29:33,527 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4241 ImplicationChecksByTransitivity, 4445.5ms TimeCoverageRelationStatistics Valid=1636, Invalid=10796, Unknown=0, NotChecked=0, Total=12432
[2021-06-12 21:29:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21094 states.
[2021-06-12 21:29:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21094 to 12167.
[2021-06-12 21:29:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12167 states, 12166 states have (on average 3.3436626664474765) internal successors, (40679), 12166 states have internal predecessors, (40679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12167 states to 12167 states and 40679 transitions.
[2021-06-12 21:29:33,793 INFO L78 Accepts]: Start accepts. Automaton has 12167 states and 40679 transitions. Word has length 36
[2021-06-12 21:29:33,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:33,793 INFO L482 AbstractCegarLoop]: Abstraction has 12167 states and 40679 transitions.
[2021-06-12 21:29:33,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12167 states and 40679 transitions.
[2021-06-12 21:29:33,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:33,807 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:33,807 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:34,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1331
[2021-06-12 21:29:34,007 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:34,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1545423999, now seen corresponding path program 175 times
[2021-06-12 21:29:34,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:34,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856721859]
[2021-06-12 21:29:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:34,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:34,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856721859]
[2021-06-12 21:29:34,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856721859] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:34,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471651157]
[2021-06-12 21:29:34,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:34,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:29:34,397 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:35,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471651157] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:35,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:35,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:29:35,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943790560]
[2021-06-12 21:29:35,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:29:35,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:35,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:29:35,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1059, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:29:35,007 INFO L87 Difference]: Start difference. First operand 12167 states and 40679 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:38,382 INFO L93 Difference]: Finished difference Result 25095 states and 81293 transitions.
[2021-06-12 21:29:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2021-06-12 21:29:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:38,425 INFO L225 Difference]: With dead ends: 25095
[2021-06-12 21:29:38,425 INFO L226 Difference]: Without dead ends: 24975
[2021-06-12 21:29:38,426 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 3098.2ms TimeCoverageRelationStatistics Valid=1208, Invalid=5764, Unknown=0, NotChecked=0, Total=6972
[2021-06-12 21:29:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24975 states.
[2021-06-12 21:29:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24975 to 12153.
[2021-06-12 21:29:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12153 states, 12152 states have (on average 3.339121132323897) internal successors, (40577), 12152 states have internal predecessors, (40577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12153 states to 12153 states and 40577 transitions.
[2021-06-12 21:29:38,712 INFO L78 Accepts]: Start accepts. Automaton has 12153 states and 40577 transitions. Word has length 36
[2021-06-12 21:29:38,712 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:38,712 INFO L482 AbstractCegarLoop]: Abstraction has 12153 states and 40577 transitions.
[2021-06-12 21:29:38,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 12153 states and 40577 transitions.
[2021-06-12 21:29:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:38,726 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:38,726 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:38,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1335
[2021-06-12 21:29:38,933 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash -820386559, now seen corresponding path program 176 times
[2021-06-12 21:29:38,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:38,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453843221]
[2021-06-12 21:29:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:39,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:39,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453843221]
[2021-06-12 21:29:39,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453843221] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:39,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308489656]
[2021-06-12 21:29:39,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:39,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:29:39,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:39,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:29:39,281 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:39,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308489656] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:39,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:39,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:29:39,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108461079]
[2021-06-12 21:29:39,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:29:39,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:29:39,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:29:39,897 INFO L87 Difference]: Start difference. First operand 12153 states and 40577 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:42,118 INFO L93 Difference]: Finished difference Result 20996 states and 68664 transitions.
[2021-06-12 21:29:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-06-12 21:29:42,119 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:42,154 INFO L225 Difference]: With dead ends: 20996
[2021-06-12 21:29:42,155 INFO L226 Difference]: Without dead ends: 20876
[2021-06-12 21:29:42,155 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1957.8ms TimeCoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540
[2021-06-12 21:29:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20876 states.
[2021-06-12 21:29:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20876 to 12203.
[2021-06-12 21:29:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12203 states, 12202 states have (on average 3.3387149647598755) internal successors, (40739), 12202 states have internal predecessors, (40739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 40739 transitions.
[2021-06-12 21:29:42,429 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 40739 transitions. Word has length 36
[2021-06-12 21:29:42,429 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:42,429 INFO L482 AbstractCegarLoop]: Abstraction has 12203 states and 40739 transitions.
[2021-06-12 21:29:42,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 40739 transitions.
[2021-06-12 21:29:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:42,443 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:42,443 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:42,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1342
[2021-06-12 21:29:42,645 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:42,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:42,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1901659413, now seen corresponding path program 177 times
[2021-06-12 21:29:42,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:42,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374910843]
[2021-06-12 21:29:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:42,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:42,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374910843]
[2021-06-12 21:29:42,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374910843] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:42,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176562284]
[2021-06-12 21:29:42,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:42,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:29:42,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:29:42,931 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:43,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176562284] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:43,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:43,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:29:43,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932862172]
[2021-06-12 21:29:43,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:29:43,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:43,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:29:43,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:29:43,446 INFO L87 Difference]: Start difference. First operand 12203 states and 40739 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:47,589 INFO L93 Difference]: Finished difference Result 16381 states and 52813 transitions.
[2021-06-12 21:29:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states.
[2021-06-12 21:29:47,590 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:47,615 INFO L225 Difference]: With dead ends: 16381
[2021-06-12 21:29:47,615 INFO L226 Difference]: Without dead ends: 16185
[2021-06-12 21:29:47,616 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 3537.5ms TimeCoverageRelationStatistics Valid=1118, Invalid=8584, Unknown=0, NotChecked=0, Total=9702
[2021-06-12 21:29:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states.
[2021-06-12 21:29:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 12258.
[2021-06-12 21:29:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12258 states, 12257 states have (on average 3.3400505833401324) internal successors, (40939), 12257 states have internal predecessors, (40939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12258 states to 12258 states and 40939 transitions.
[2021-06-12 21:29:47,899 INFO L78 Accepts]: Start accepts. Automaton has 12258 states and 40939 transitions. Word has length 36
[2021-06-12 21:29:47,899 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:47,899 INFO L482 AbstractCegarLoop]: Abstraction has 12258 states and 40939 transitions.
[2021-06-12 21:29:47,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 12258 states and 40939 transitions.
[2021-06-12 21:29:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:47,912 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:47,912 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:48,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1349,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:48,128 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:48,129 INFO L82 PathProgramCache]: Analyzing trace with hash -57082179, now seen corresponding path program 178 times
[2021-06-12 21:29:48,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:48,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449957283]
[2021-06-12 21:29:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:48,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:48,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449957283]
[2021-06-12 21:29:48,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449957283] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:48,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513232827]
[2021-06-12 21:29:48,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:48,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:29:48,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:48,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:29:48,426 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:48,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513232827] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:48,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:48,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:29:48,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273880084]
[2021-06-12 21:29:48,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:29:48,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:29:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:29:48,952 INFO L87 Difference]: Start difference. First operand 12258 states and 40939 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:52,080 INFO L93 Difference]: Finished difference Result 15245 states and 49509 transitions.
[2021-06-12 21:29:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2021-06-12 21:29:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:52,104 INFO L225 Difference]: With dead ends: 15245
[2021-06-12 21:29:52,104 INFO L226 Difference]: Without dead ends: 15084
[2021-06-12 21:29:52,105 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 2546.7ms TimeCoverageRelationStatistics Valid=983, Invalid=6327, Unknown=0, NotChecked=0, Total=7310
[2021-06-12 21:29:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15084 states.
[2021-06-12 21:29:52,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15084 to 12278.
[2021-06-12 21:29:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12278 states, 12277 states have (on average 3.3397409790665473) internal successors, (41002), 12277 states have internal predecessors, (41002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12278 states to 12278 states and 41002 transitions.
[2021-06-12 21:29:52,314 INFO L78 Accepts]: Start accepts. Automaton has 12278 states and 41002 transitions. Word has length 36
[2021-06-12 21:29:52,314 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:52,314 INFO L482 AbstractCegarLoop]: Abstraction has 12278 states and 41002 transitions.
[2021-06-12 21:29:52,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12278 states and 41002 transitions.
[2021-06-12 21:29:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:52,329 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:52,329 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:52,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1353
[2021-06-12 21:29:52,529 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash 660485821, now seen corresponding path program 179 times
[2021-06-12 21:29:52,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:52,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180681836]
[2021-06-12 21:29:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:52,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:52,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180681836]
[2021-06-12 21:29:52,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180681836] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:52,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328211807]
[2021-06-12 21:29:52,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:52,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:29:52,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:52,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:29:52,829 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:53,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328211807] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:53,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:53,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:29:53,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992153309]
[2021-06-12 21:29:53,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:29:53,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:53,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:29:53,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:29:53,377 INFO L87 Difference]: Start difference. First operand 12278 states and 41002 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:29:57,214 INFO L93 Difference]: Finished difference Result 19580 states and 62833 transitions.
[2021-06-12 21:29:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states.
[2021-06-12 21:29:57,214 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:29:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:29:57,243 INFO L225 Difference]: With dead ends: 19580
[2021-06-12 21:29:57,243 INFO L226 Difference]: Without dead ends: 19369
[2021-06-12 21:29:57,243 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 3259.1ms TimeCoverageRelationStatistics Valid=1359, Invalid=7761, Unknown=0, NotChecked=0, Total=9120
[2021-06-12 21:29:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19369 states.
[2021-06-12 21:29:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19369 to 12282.
[2021-06-12 21:29:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12282 states, 12281 states have (on average 3.3397931764514293) internal successors, (41016), 12281 states have internal predecessors, (41016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12282 states to 12282 states and 41016 transitions.
[2021-06-12 21:29:57,485 INFO L78 Accepts]: Start accepts. Automaton has 12282 states and 41016 transitions. Word has length 36
[2021-06-12 21:29:57,485 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:29:57,485 INFO L482 AbstractCegarLoop]: Abstraction has 12282 states and 41016 transitions.
[2021-06-12 21:29:57,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:29:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand 12282 states and 41016 transitions.
[2021-06-12 21:29:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:29:57,499 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:29:57,499 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:29:57,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1357,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:57,700 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:29:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:29:57,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1158724095, now seen corresponding path program 180 times
[2021-06-12 21:29:57,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:29:57,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339710201]
[2021-06-12 21:29:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:29:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:29:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:58,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:29:58,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339710201]
[2021-06-12 21:29:58,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339710201] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:58,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689574625]
[2021-06-12 21:29:58,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:29:58,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:29:58,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:29:58,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:29:58,049 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:29:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:29:58,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689574625] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:29:58,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:29:58,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:29:58,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942095333]
[2021-06-12 21:29:58,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:29:58,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:29:58,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:29:58,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:29:58,538 INFO L87 Difference]: Start difference. First operand 12282 states and 41016 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:00,892 INFO L93 Difference]: Finished difference Result 17885 states and 58750 transitions.
[2021-06-12 21:30:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2021-06-12 21:30:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:00,922 INFO L225 Difference]: With dead ends: 17885
[2021-06-12 21:30:00,922 INFO L226 Difference]: Without dead ends: 17756
[2021-06-12 21:30:00,922 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 1955.4ms TimeCoverageRelationStatistics Valid=535, Invalid=3125, Unknown=0, NotChecked=0, Total=3660
[2021-06-12 21:30:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17756 states.
[2021-06-12 21:30:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17756 to 12282.
[2021-06-12 21:30:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12282 states, 12281 states have (on average 3.339386043481801) internal successors, (41011), 12281 states have internal predecessors, (41011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12282 states to 12282 states and 41011 transitions.
[2021-06-12 21:30:01,140 INFO L78 Accepts]: Start accepts. Automaton has 12282 states and 41011 transitions. Word has length 36
[2021-06-12 21:30:01,140 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:01,140 INFO L482 AbstractCegarLoop]: Abstraction has 12282 states and 41011 transitions.
[2021-06-12 21:30:01,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12282 states and 41011 transitions.
[2021-06-12 21:30:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:01,155 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:01,155 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:01,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1361,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:01,356 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash -689852995, now seen corresponding path program 181 times
[2021-06-12 21:30:01,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:01,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866899030]
[2021-06-12 21:30:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:01,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:01,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866899030]
[2021-06-12 21:30:01,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866899030] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:01,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348336419]
[2021-06-12 21:30:01,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:01,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-06-12 21:30:01,855 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:02,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348336419] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:02,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:02,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:30:02,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491260587]
[2021-06-12 21:30:02,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:30:02,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:30:02,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:30:02,417 INFO L87 Difference]: Start difference. First operand 12282 states and 41011 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:04,450 INFO L93 Difference]: Finished difference Result 23065 states and 75742 transitions.
[2021-06-12 21:30:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:30:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:04,490 INFO L225 Difference]: With dead ends: 23065
[2021-06-12 21:30:04,490 INFO L226 Difference]: Without dead ends: 22985
[2021-06-12 21:30:04,490 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2008.3ms TimeCoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032
[2021-06-12 21:30:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22985 states.
[2021-06-12 21:30:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22985 to 12934.
[2021-06-12 21:30:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12934 states, 12933 states have (on average 3.3547514111188432) internal successors, (43387), 12933 states have internal predecessors, (43387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12934 states to 12934 states and 43387 transitions.
[2021-06-12 21:30:04,798 INFO L78 Accepts]: Start accepts. Automaton has 12934 states and 43387 transitions. Word has length 36
[2021-06-12 21:30:04,798 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:04,798 INFO L482 AbstractCegarLoop]: Abstraction has 12934 states and 43387 transitions.
[2021-06-12 21:30:04,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12934 states and 43387 transitions.
[2021-06-12 21:30:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:04,813 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:04,813 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:05,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1366
[2021-06-12 21:30:05,014 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:05,014 INFO L82 PathProgramCache]: Analyzing trace with hash 162276749, now seen corresponding path program 182 times
[2021-06-12 21:30:05,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:05,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763146630]
[2021-06-12 21:30:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:05,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:05,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763146630]
[2021-06-12 21:30:05,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763146630] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:05,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035584067]
[2021-06-12 21:30:05,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:05,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:30:05,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:05,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:30:05,285 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:05,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035584067] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:05,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:05,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:30:05,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167516743]
[2021-06-12 21:30:05,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:30:05,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:30:05,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:30:05,966 INFO L87 Difference]: Start difference. First operand 12934 states and 43387 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:07,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:07,611 INFO L93 Difference]: Finished difference Result 15480 states and 50971 transitions.
[2021-06-12 21:30:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-06-12 21:30:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:07,637 INFO L225 Difference]: With dead ends: 15480
[2021-06-12 21:30:07,637 INFO L226 Difference]: Without dead ends: 15366
[2021-06-12 21:30:07,637 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1420.8ms TimeCoverageRelationStatistics Valid=467, Invalid=2395, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:30:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states.
[2021-06-12 21:30:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 12978.
[2021-06-12 21:30:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12978 states, 12977 states have (on average 3.354165061262233) internal successors, (43527), 12977 states have internal predecessors, (43527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12978 states to 12978 states and 43527 transitions.
[2021-06-12 21:30:07,876 INFO L78 Accepts]: Start accepts. Automaton has 12978 states and 43527 transitions. Word has length 36
[2021-06-12 21:30:07,876 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:07,877 INFO L482 AbstractCegarLoop]: Abstraction has 12978 states and 43527 transitions.
[2021-06-12 21:30:07,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12978 states and 43527 transitions.
[2021-06-12 21:30:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:07,892 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:07,892 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:08,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1380,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:08,093 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1013868853, now seen corresponding path program 183 times
[2021-06-12 21:30:08,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:08,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47383173]
[2021-06-12 21:30:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:08,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:08,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47383173]
[2021-06-12 21:30:08,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47383173] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:08,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766611038]
[2021-06-12 21:30:08,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:08,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-06-12 21:30:08,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:08,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:30:08,521 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:09,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766611038] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:09,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:09,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:30:09,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162629215]
[2021-06-12 21:30:09,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:30:09,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:09,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:30:09,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:30:09,089 INFO L87 Difference]: Start difference. First operand 12978 states and 43527 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:10,614 INFO L93 Difference]: Finished difference Result 15292 states and 50593 transitions.
[2021-06-12 21:30:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-06-12 21:30:10,615 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:10,641 INFO L225 Difference]: With dead ends: 15292
[2021-06-12 21:30:10,641 INFO L226 Difference]: Without dead ends: 15172
[2021-06-12 21:30:10,642 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1564.2ms TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862
[2021-06-12 21:30:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15172 states.
[2021-06-12 21:30:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15172 to 12978.
[2021-06-12 21:30:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12978 states, 12977 states have (on average 3.354165061262233) internal successors, (43527), 12977 states have internal predecessors, (43527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12978 states to 12978 states and 43527 transitions.
[2021-06-12 21:30:10,872 INFO L78 Accepts]: Start accepts. Automaton has 12978 states and 43527 transitions. Word has length 36
[2021-06-12 21:30:10,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:10,872 INFO L482 AbstractCegarLoop]: Abstraction has 12978 states and 43527 transitions.
[2021-06-12 21:30:10,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 12978 states and 43527 transitions.
[2021-06-12 21:30:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:10,999 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:10,999 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:11,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1390
[2021-06-12 21:30:11,215 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -559052471, now seen corresponding path program 184 times
[2021-06-12 21:30:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:11,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668407109]
[2021-06-12 21:30:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:11,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:11,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668407109]
[2021-06-12 21:30:11,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668407109] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:11,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177232084]
[2021-06-12 21:30:11,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:11,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:30:11,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:11,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:11,554 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:12,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177232084] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:12,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:12,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:30:12,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109840404]
[2021-06-12 21:30:12,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:30:12,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:30:12,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:30:12,136 INFO L87 Difference]: Start difference. First operand 12978 states and 43527 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:14,367 INFO L93 Difference]: Finished difference Result 14778 states and 48554 transitions.
[2021-06-12 21:30:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2021-06-12 21:30:14,368 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:14,391 INFO L225 Difference]: With dead ends: 14778
[2021-06-12 21:30:14,391 INFO L226 Difference]: Without dead ends: 14518
[2021-06-12 21:30:14,392 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1848.9ms TimeCoverageRelationStatistics Valid=694, Invalid=3862, Unknown=0, NotChecked=0, Total=4556
[2021-06-12 21:30:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14518 states.
[2021-06-12 21:30:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14518 to 13036.
[2021-06-12 21:30:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13036 states, 13035 states have (on average 3.353049482163406) internal successors, (43707), 13035 states have internal predecessors, (43707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13036 states to 13036 states and 43707 transitions.
[2021-06-12 21:30:14,674 INFO L78 Accepts]: Start accepts. Automaton has 13036 states and 43707 transitions. Word has length 36
[2021-06-12 21:30:14,674 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:14,674 INFO L482 AbstractCegarLoop]: Abstraction has 13036 states and 43707 transitions.
[2021-06-12 21:30:14,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13036 states and 43707 transitions.
[2021-06-12 21:30:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:14,691 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:14,691 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:14,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1397
[2021-06-12 21:30:14,907 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:14,907 INFO L82 PathProgramCache]: Analyzing trace with hash 433441093, now seen corresponding path program 185 times
[2021-06-12 21:30:14,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:14,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178180992]
[2021-06-12 21:30:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:15,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:15,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178180992]
[2021-06-12 21:30:15,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178180992] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:15,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581801773]
[2021-06-12 21:30:15,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:15,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:30:15,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:15,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:15,172 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:15,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581801773] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:15,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:15,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:30:15,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151767809]
[2021-06-12 21:30:15,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:30:15,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:15,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:30:15,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:30:15,761 INFO L87 Difference]: Start difference. First operand 13036 states and 43707 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:18,275 INFO L93 Difference]: Finished difference Result 16081 states and 52501 transitions.
[2021-06-12 21:30:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2021-06-12 21:30:18,276 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:18,300 INFO L225 Difference]: With dead ends: 16081
[2021-06-12 21:30:18,300 INFO L226 Difference]: Without dead ends: 15831
[2021-06-12 21:30:18,300 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 2016.7ms TimeCoverageRelationStatistics Valid=847, Invalid=4555, Unknown=0, NotChecked=0, Total=5402
[2021-06-12 21:30:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15831 states.
[2021-06-12 21:30:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15831 to 13054.
[2021-06-12 21:30:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13054 states, 13053 states have (on average 3.3539416226154906) internal successors, (43779), 13053 states have internal predecessors, (43779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13054 states to 13054 states and 43779 transitions.
[2021-06-12 21:30:18,540 INFO L78 Accepts]: Start accepts. Automaton has 13054 states and 43779 transitions. Word has length 36
[2021-06-12 21:30:18,540 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:18,540 INFO L482 AbstractCegarLoop]: Abstraction has 13054 states and 43779 transitions.
[2021-06-12 21:30:18,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13054 states and 43779 transitions.
[2021-06-12 21:30:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:18,558 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:18,558 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:18,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1401
[2021-06-12 21:30:18,774 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1151009093, now seen corresponding path program 186 times
[2021-06-12 21:30:18,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:18,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749035833]
[2021-06-12 21:30:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:19,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:19,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749035833]
[2021-06-12 21:30:19,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749035833] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:19,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358389666]
[2021-06-12 21:30:19,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:19,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:30:19,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:19,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:19,049 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:19,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358389666] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:19,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:19,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:30:19,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80164301]
[2021-06-12 21:30:19,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:30:19,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:19,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:30:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:30:19,543 INFO L87 Difference]: Start difference. First operand 13054 states and 43779 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:22,117 INFO L93 Difference]: Finished difference Result 20104 states and 65043 transitions.
[2021-06-12 21:30:22,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:30:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:22,150 INFO L225 Difference]: With dead ends: 20104
[2021-06-12 21:30:22,150 INFO L226 Difference]: Without dead ends: 19902
[2021-06-12 21:30:22,151 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 2074.6ms TimeCoverageRelationStatistics Valid=1030, Invalid=4520, Unknown=0, NotChecked=0, Total=5550
[2021-06-12 21:30:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19902 states.
[2021-06-12 21:30:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19902 to 13034.
[2021-06-12 21:30:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13034 states, 13033 states have (on average 3.3529502033300083) internal successors, (43699), 13033 states have internal predecessors, (43699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13034 states to 13034 states and 43699 transitions.
[2021-06-12 21:30:22,424 INFO L78 Accepts]: Start accepts. Automaton has 13034 states and 43699 transitions. Word has length 36
[2021-06-12 21:30:22,424 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:22,424 INFO L482 AbstractCegarLoop]: Abstraction has 13034 states and 43699 transitions.
[2021-06-12 21:30:22,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 13034 states and 43699 transitions.
[2021-06-12 21:30:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:22,442 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:22,442 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:22,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1405,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:22,653 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:22,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1777173233, now seen corresponding path program 187 times
[2021-06-12 21:30:22,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:22,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107626979]
[2021-06-12 21:30:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:22,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:22,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107626979]
[2021-06-12 21:30:22,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107626979] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:22,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658500047]
[2021-06-12 21:30:22,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:22,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:22,897 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:23,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658500047] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:23,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:23,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:30:23,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465763004]
[2021-06-12 21:30:23,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:30:23,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:30:23,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:30:23,558 INFO L87 Difference]: Start difference. First operand 13034 states and 43699 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:25,460 INFO L93 Difference]: Finished difference Result 15744 states and 51494 transitions.
[2021-06-12 21:30:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2021-06-12 21:30:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:25,485 INFO L225 Difference]: With dead ends: 15744
[2021-06-12 21:30:25,486 INFO L226 Difference]: Without dead ends: 15514
[2021-06-12 21:30:25,486 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1678.4ms TimeCoverageRelationStatistics Valid=764, Invalid=3928, Unknown=0, NotChecked=0, Total=4692
[2021-06-12 21:30:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15514 states.
[2021-06-12 21:30:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15514 to 13077.
[2021-06-12 21:30:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13077 states, 13076 states have (on average 3.353395533802386) internal successors, (43849), 13076 states have internal predecessors, (43849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13077 states to 13077 states and 43849 transitions.
[2021-06-12 21:30:25,799 INFO L78 Accepts]: Start accepts. Automaton has 13077 states and 43849 transitions. Word has length 36
[2021-06-12 21:30:25,799 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:25,799 INFO L482 AbstractCegarLoop]: Abstraction has 13077 states and 43849 transitions.
[2021-06-12 21:30:25,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13077 states and 43849 transitions.
[2021-06-12 21:30:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:25,816 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:25,816 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:26,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1409,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:26,016 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1800226063, now seen corresponding path program 188 times
[2021-06-12 21:30:26,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:26,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261314400]
[2021-06-12 21:30:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:26,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:26,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261314400]
[2021-06-12 21:30:26,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261314400] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:26,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221255494]
[2021-06-12 21:30:26,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:26,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:30:26,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:26,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:26,273 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:26,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221255494] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:26,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:26,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:30:26,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306364404]
[2021-06-12 21:30:26,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:30:26,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:26,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:30:26,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:30:26,780 INFO L87 Difference]: Start difference. First operand 13077 states and 43849 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:29,334 INFO L93 Difference]: Finished difference Result 20294 states and 65481 transitions.
[2021-06-12 21:30:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:30:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:29,366 INFO L225 Difference]: With dead ends: 20294
[2021-06-12 21:30:29,366 INFO L226 Difference]: Without dead ends: 20086
[2021-06-12 21:30:29,366 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 2063.9ms TimeCoverageRelationStatistics Valid=1022, Invalid=4528, Unknown=0, NotChecked=0, Total=5550
[2021-06-12 21:30:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20086 states.
[2021-06-12 21:30:29,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20086 to 13046.
[2021-06-12 21:30:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13046 states, 13045 states have (on average 3.3526255270218472) internal successors, (43735), 13045 states have internal predecessors, (43735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 43735 transitions.
[2021-06-12 21:30:29,651 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 43735 transitions. Word has length 36
[2021-06-12 21:30:29,651 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:29,651 INFO L482 AbstractCegarLoop]: Abstraction has 13046 states and 43735 transitions.
[2021-06-12 21:30:29,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 43735 transitions.
[2021-06-12 21:30:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:29,669 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:29,669 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:29,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1413
[2021-06-12 21:30:29,875 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:29,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1099081613, now seen corresponding path program 189 times
[2021-06-12 21:30:29,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:29,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530917099]
[2021-06-12 21:30:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:30,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:30,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530917099]
[2021-06-12 21:30:30,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530917099] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:30,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239328898]
[2021-06-12 21:30:30,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:30,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:30:30,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:30,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:30:30,171 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:30,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239328898] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:30,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:30,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:30:30,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422006297]
[2021-06-12 21:30:30,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:30:30,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:30,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:30:30,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:30:30,663 INFO L87 Difference]: Start difference. First operand 13046 states and 43735 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:32,255 INFO L93 Difference]: Finished difference Result 15141 states and 49852 transitions.
[2021-06-12 21:30:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:30:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:32,279 INFO L225 Difference]: With dead ends: 15141
[2021-06-12 21:30:32,279 INFO L226 Difference]: Without dead ends: 14948
[2021-06-12 21:30:32,280 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1506.8ms TimeCoverageRelationStatistics Valid=542, Invalid=2880, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:30:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14948 states.
[2021-06-12 21:30:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14948 to 13054.
[2021-06-12 21:30:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13054 states, 13053 states have (on average 3.3528690722439287) internal successors, (43765), 13053 states have internal predecessors, (43765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13054 states to 13054 states and 43765 transitions.
[2021-06-12 21:30:32,516 INFO L78 Accepts]: Start accepts. Automaton has 13054 states and 43765 transitions. Word has length 36
[2021-06-12 21:30:32,516 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:32,516 INFO L482 AbstractCegarLoop]: Abstraction has 13054 states and 43765 transitions.
[2021-06-12 21:30:32,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 13054 states and 43765 transitions.
[2021-06-12 21:30:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:32,533 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:32,533 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:32,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1417,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:32,737 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:32,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:32,737 INFO L82 PathProgramCache]: Analyzing trace with hash 977665181, now seen corresponding path program 190 times
[2021-06-12 21:30:32,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:32,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586565163]
[2021-06-12 21:30:32,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:32,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:32,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586565163]
[2021-06-12 21:30:32,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586565163] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:32,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791053585]
[2021-06-12 21:30:32,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:33,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:30:33,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:33,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:30:33,016 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:33,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791053585] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:33,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:33,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:30:33,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038920152]
[2021-06-12 21:30:33,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:30:33,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:30:33,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:30:33,623 INFO L87 Difference]: Start difference. First operand 13054 states and 43765 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:35,313 INFO L93 Difference]: Finished difference Result 16525 states and 54476 transitions.
[2021-06-12 21:30:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2021-06-12 21:30:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:35,340 INFO L225 Difference]: With dead ends: 16525
[2021-06-12 21:30:35,340 INFO L226 Difference]: Without dead ends: 16430
[2021-06-12 21:30:35,340 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1510.4ms TimeCoverageRelationStatistics Valid=569, Invalid=2623, Unknown=0, NotChecked=0, Total=3192
[2021-06-12 21:30:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16430 states.
[2021-06-12 21:30:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16430 to 13084.
[2021-06-12 21:30:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13084 states, 13083 states have (on average 3.352671405640908) internal successors, (43863), 13083 states have internal predecessors, (43863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13084 states to 13084 states and 43863 transitions.
[2021-06-12 21:30:35,580 INFO L78 Accepts]: Start accepts. Automaton has 13084 states and 43863 transitions. Word has length 36
[2021-06-12 21:30:35,580 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:35,580 INFO L482 AbstractCegarLoop]: Abstraction has 13084 states and 43863 transitions.
[2021-06-12 21:30:35,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 13084 states and 43863 transitions.
[2021-06-12 21:30:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:35,596 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:35,596 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:35,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1422
[2021-06-12 21:30:35,797 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:35,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1899367321, now seen corresponding path program 191 times
[2021-06-12 21:30:35,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:35,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465230849]
[2021-06-12 21:30:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:36,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:36,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465230849]
[2021-06-12 21:30:36,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465230849] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:36,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045575470]
[2021-06-12 21:30:36,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:36,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:30:36,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:36,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:30:36,100 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:36,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045575470] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:36,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:36,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:30:36,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203395802]
[2021-06-12 21:30:36,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:30:36,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:36,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:30:36,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:30:36,660 INFO L87 Difference]: Start difference. First operand 13084 states and 43863 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:38,218 INFO L93 Difference]: Finished difference Result 17451 states and 57232 transitions.
[2021-06-12 21:30:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-06-12 21:30:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:38,248 INFO L225 Difference]: With dead ends: 17451
[2021-06-12 21:30:38,248 INFO L226 Difference]: Without dead ends: 17371
[2021-06-12 21:30:38,248 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1341.7ms TimeCoverageRelationStatistics Valid=528, Invalid=2124, Unknown=0, NotChecked=0, Total=2652
[2021-06-12 21:30:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17371 states.
[2021-06-12 21:30:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17371 to 13158.
[2021-06-12 21:30:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13158 states, 13157 states have (on average 3.3515999087937978) internal successors, (44097), 13157 states have internal predecessors, (44097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13158 states to 13158 states and 44097 transitions.
[2021-06-12 21:30:38,501 INFO L78 Accepts]: Start accepts. Automaton has 13158 states and 44097 transitions. Word has length 36
[2021-06-12 21:30:38,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:38,502 INFO L482 AbstractCegarLoop]: Abstraction has 13158 states and 44097 transitions.
[2021-06-12 21:30:38,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13158 states and 44097 transitions.
[2021-06-12 21:30:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:38,519 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:38,519 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:38,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1429,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:38,720 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:38,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1829257285, now seen corresponding path program 192 times
[2021-06-12 21:30:38,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:38,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071605710]
[2021-06-12 21:30:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:39,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:39,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071605710]
[2021-06-12 21:30:39,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071605710] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:39,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217169206]
[2021-06-12 21:30:39,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:39,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:30:39,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:39,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:30:39,025 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:39,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217169206] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:39,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:39,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:30:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508933709]
[2021-06-12 21:30:39,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:30:39,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:30:39,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:30:39,626 INFO L87 Difference]: Start difference. First operand 13158 states and 44097 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:41,140 INFO L93 Difference]: Finished difference Result 18108 states and 59430 transitions.
[2021-06-12 21:30:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-06-12 21:30:41,141 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:41,171 INFO L225 Difference]: With dead ends: 18108
[2021-06-12 21:30:41,171 INFO L226 Difference]: Without dead ends: 17988
[2021-06-12 21:30:41,171 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1538.6ms TimeCoverageRelationStatistics Valid=630, Invalid=2340, Unknown=0, NotChecked=0, Total=2970
[2021-06-12 21:30:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17988 states.
[2021-06-12 21:30:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17988 to 13154.
[2021-06-12 21:30:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13154 states, 13153 states have (on average 3.3517068349425987) internal successors, (44085), 13153 states have internal predecessors, (44085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13154 states to 13154 states and 44085 transitions.
[2021-06-12 21:30:41,442 INFO L78 Accepts]: Start accepts. Automaton has 13154 states and 44085 transitions. Word has length 36
[2021-06-12 21:30:41,442 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:41,442 INFO L482 AbstractCegarLoop]: Abstraction has 13154 states and 44085 transitions.
[2021-06-12 21:30:41,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 13154 states and 44085 transitions.
[2021-06-12 21:30:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:41,459 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:41,459 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:41,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1433,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:41,659 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:41,659 INFO L82 PathProgramCache]: Analyzing trace with hash 256335961, now seen corresponding path program 193 times
[2021-06-12 21:30:41,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:41,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265319216]
[2021-06-12 21:30:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:41,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:41,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265319216]
[2021-06-12 21:30:41,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265319216] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:41,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178482987]
[2021-06-12 21:30:41,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:41,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:41,916 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:42,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178482987] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:42,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:42,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36
[2021-06-12 21:30:42,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437188740]
[2021-06-12 21:30:42,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:30:42,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:30:42,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:30:42,464 INFO L87 Difference]: Start difference. First operand 13154 states and 44085 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:44,802 INFO L93 Difference]: Finished difference Result 15188 states and 49736 transitions.
[2021-06-12 21:30:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2021-06-12 21:30:44,802 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:44,826 INFO L225 Difference]: With dead ends: 15188
[2021-06-12 21:30:44,827 INFO L226 Difference]: Without dead ends: 14952
[2021-06-12 21:30:44,827 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 1870.4ms TimeCoverageRelationStatistics Valid=767, Invalid=4489, Unknown=0, NotChecked=0, Total=5256
[2021-06-12 21:30:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14952 states.
[2021-06-12 21:30:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14952 to 13202.
[2021-06-12 21:30:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13202 states, 13201 states have (on average 3.351185516248769) internal successors, (44239), 13201 states have internal predecessors, (44239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13202 states to 13202 states and 44239 transitions.
[2021-06-12 21:30:45,063 INFO L78 Accepts]: Start accepts. Automaton has 13202 states and 44239 transitions. Word has length 36
[2021-06-12 21:30:45,063 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:45,063 INFO L482 AbstractCegarLoop]: Abstraction has 13202 states and 44239 transitions.
[2021-06-12 21:30:45,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 36 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 13202 states and 44239 transitions.
[2021-06-12 21:30:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:45,080 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:45,080 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:45,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1443
[2021-06-12 21:30:45,281 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1248829525, now seen corresponding path program 194 times
[2021-06-12 21:30:45,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:45,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453671461]
[2021-06-12 21:30:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:45,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:45,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453671461]
[2021-06-12 21:30:45,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453671461] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:45,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776456378]
[2021-06-12 21:30:45,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:45,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:30:45,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:45,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:45,571 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:46,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776456378] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:46,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:46,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:30:46,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113813989]
[2021-06-12 21:30:46,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:30:46,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:46,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:30:46,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:30:46,066 INFO L87 Difference]: Start difference. First operand 13202 states and 44239 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:48,813 INFO L93 Difference]: Finished difference Result 16537 states and 53850 transitions.
[2021-06-12 21:30:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2021-06-12 21:30:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:48,838 INFO L225 Difference]: With dead ends: 16537
[2021-06-12 21:30:48,838 INFO L226 Difference]: Without dead ends: 16291
[2021-06-12 21:30:48,838 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2219.3ms TimeCoverageRelationStatistics Valid=951, Invalid=5529, Unknown=0, NotChecked=0, Total=6480
[2021-06-12 21:30:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16291 states.
[2021-06-12 21:30:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16291 to 13221.
[2021-06-12 21:30:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13221 states, 13220 states have (on average 3.3521180030257187) internal successors, (44315), 13220 states have internal predecessors, (44315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 44315 transitions.
[2021-06-12 21:30:49,082 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 44315 transitions. Word has length 36
[2021-06-12 21:30:49,082 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:49,082 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 44315 transitions.
[2021-06-12 21:30:49,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 44315 transitions.
[2021-06-12 21:30:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:49,100 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:49,100 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:49,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1447,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:49,300 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1702405631, now seen corresponding path program 195 times
[2021-06-12 21:30:49,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:49,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98736517]
[2021-06-12 21:30:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:49,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:49,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98736517]
[2021-06-12 21:30:49,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98736517] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:49,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806496615]
[2021-06-12 21:30:49,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:49,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:30:49,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:30:49,552 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:50,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806496615] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:50,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:50,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:30:50,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525626666]
[2021-06-12 21:30:50,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:30:50,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:30:50,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:30:50,056 INFO L87 Difference]: Start difference. First operand 13221 states and 44315 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:52,633 INFO L93 Difference]: Finished difference Result 16103 states and 52572 transitions.
[2021-06-12 21:30:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:30:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:52,660 INFO L225 Difference]: With dead ends: 16103
[2021-06-12 21:30:52,660 INFO L226 Difference]: Without dead ends: 15869
[2021-06-12 21:30:52,660 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 2042.1ms TimeCoverageRelationStatistics Valid=872, Invalid=4980, Unknown=0, NotChecked=0, Total=5852
[2021-06-12 21:30:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15869 states.
[2021-06-12 21:30:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15869 to 13235.
[2021-06-12 21:30:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13235 states, 13234 states have (on average 3.351745504004836) internal successors, (44357), 13234 states have internal predecessors, (44357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13235 states to 13235 states and 44357 transitions.
[2021-06-12 21:30:52,895 INFO L78 Accepts]: Start accepts. Automaton has 13235 states and 44357 transitions. Word has length 36
[2021-06-12 21:30:52,895 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:52,895 INFO L482 AbstractCegarLoop]: Abstraction has 13235 states and 44357 transitions.
[2021-06-12 21:30:52,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 13235 states and 44357 transitions.
[2021-06-12 21:30:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:52,912 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:52,912 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:53,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1451
[2021-06-12 21:30:53,112 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1561029785, now seen corresponding path program 196 times
[2021-06-12 21:30:53,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:53,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199318105]
[2021-06-12 21:30:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:53,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:53,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199318105]
[2021-06-12 21:30:53,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199318105] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:53,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876972920]
[2021-06-12 21:30:53,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:53,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:30:53,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:53,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:30:53,412 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:53,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876972920] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:53,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:53,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:30:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142190087]
[2021-06-12 21:30:53,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:30:53,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:53,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:30:53,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:30:53,921 INFO L87 Difference]: Start difference. First operand 13235 states and 44357 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:56,248 INFO L93 Difference]: Finished difference Result 17515 states and 57509 transitions.
[2021-06-12 21:30:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2021-06-12 21:30:56,249 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:56,277 INFO L225 Difference]: With dead ends: 17515
[2021-06-12 21:30:56,277 INFO L226 Difference]: Without dead ends: 17322
[2021-06-12 21:30:56,278 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1787.7ms TimeCoverageRelationStatistics Valid=694, Invalid=3728, Unknown=0, NotChecked=0, Total=4422
[2021-06-12 21:30:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17322 states.
[2021-06-12 21:30:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17322 to 13148.
[2021-06-12 21:30:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13148 states, 13147 states have (on average 3.3514109682817375) internal successors, (44061), 13147 states have internal predecessors, (44061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13148 states to 13148 states and 44061 transitions.
[2021-06-12 21:30:56,537 INFO L78 Accepts]: Start accepts. Automaton has 13148 states and 44061 transitions. Word has length 36
[2021-06-12 21:30:56,537 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:56,537 INFO L482 AbstractCegarLoop]: Abstraction has 13148 states and 44061 transitions.
[2021-06-12 21:30:56,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:56,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13148 states and 44061 transitions.
[2021-06-12 21:30:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:56,554 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:56,554 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:56,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1455
[2021-06-12 21:30:56,754 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash -119332775, now seen corresponding path program 197 times
[2021-06-12 21:30:56,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:56,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116362146]
[2021-06-12 21:30:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:30:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:57,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:30:57,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116362146]
[2021-06-12 21:30:57,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116362146] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:57,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014939245]
[2021-06-12 21:30:57,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:30:57,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-06-12 21:30:57,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:30:57,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:30:57,122 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:30:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:30:57,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014939245] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:30:57,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:30:57,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:30:57,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405512122]
[2021-06-12 21:30:57,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:30:57,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:30:57,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:30:57,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:30:57,690 INFO L87 Difference]: Start difference. First operand 13148 states and 44061 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:30:59,450 INFO L93 Difference]: Finished difference Result 15694 states and 51719 transitions.
[2021-06-12 21:30:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-06-12 21:30:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:30:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:30:59,476 INFO L225 Difference]: With dead ends: 15694
[2021-06-12 21:30:59,476 INFO L226 Difference]: Without dead ends: 15626
[2021-06-12 21:30:59,477 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1549.6ms TimeCoverageRelationStatistics Valid=528, Invalid=2894, Unknown=0, NotChecked=0, Total=3422
[2021-06-12 21:30:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15626 states.
[2021-06-12 21:30:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15626 to 13340.
[2021-06-12 21:30:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13340 states, 13339 states have (on average 3.3481520353849614) internal successors, (44661), 13339 states have internal predecessors, (44661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13340 states to 13340 states and 44661 transitions.
[2021-06-12 21:30:59,742 INFO L78 Accepts]: Start accepts. Automaton has 13340 states and 44661 transitions. Word has length 36
[2021-06-12 21:30:59,742 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:30:59,742 INFO L482 AbstractCegarLoop]: Abstraction has 13340 states and 44661 transitions.
[2021-06-12 21:30:59,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:30:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13340 states and 44661 transitions.
[2021-06-12 21:30:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:30:59,760 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:30:59,760 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:30:59,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1460
[2021-06-12 21:30:59,960 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:30:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:30:59,961 INFO L82 PathProgramCache]: Analyzing trace with hash 802369365, now seen corresponding path program 198 times
[2021-06-12 21:30:59,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:30:59,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749313463]
[2021-06-12 21:30:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:30:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:00,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:00,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749313463]
[2021-06-12 21:31:00,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749313463] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:00,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524311109]
[2021-06-12 21:31:00,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:00,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:31:00,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:00,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:31:00,287 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:00,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524311109] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:00,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:00,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33
[2021-06-12 21:31:00,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452994811]
[2021-06-12 21:31:00,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states
[2021-06-12 21:31:00,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2021-06-12 21:31:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122
[2021-06-12 21:31:00,862 INFO L87 Difference]: Start difference. First operand 13340 states and 44661 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:03,054 INFO L93 Difference]: Finished difference Result 16841 states and 55578 transitions.
[2021-06-12 21:31:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2021-06-12 21:31:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:31:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:03,080 INFO L225 Difference]: With dead ends: 16841
[2021-06-12 21:31:03,081 INFO L226 Difference]: Without dead ends: 16721
[2021-06-12 21:31:03,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1758.4ms TimeCoverageRelationStatistics Valid=618, Invalid=3288, Unknown=0, NotChecked=0, Total=3906
[2021-06-12 21:31:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16721 states.
[2021-06-12 21:31:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16721 to 13338.
[2021-06-12 21:31:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13338 states, 13337 states have (on average 3.347904326310265) internal successors, (44651), 13337 states have internal predecessors, (44651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13338 states to 13338 states and 44651 transitions.
[2021-06-12 21:31:03,322 INFO L78 Accepts]: Start accepts. Automaton has 13338 states and 44651 transitions. Word has length 36
[2021-06-12 21:31:03,322 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:03,322 INFO L482 AbstractCegarLoop]: Abstraction has 13338 states and 44651 transitions.
[2021-06-12 21:31:03,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13338 states and 44651 transitions.
[2021-06-12 21:31:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:31:03,340 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:03,340 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:03,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1464
[2021-06-12 21:31:03,541 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash 732259329, now seen corresponding path program 199 times
[2021-06-12 21:31:03,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:03,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123556372]
[2021-06-12 21:31:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:03,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:03,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123556372]
[2021-06-12 21:31:03,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123556372] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:03,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965521025]
[2021-06-12 21:31:03,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:03,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:31:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:04,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965521025] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:04,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:04,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:31:04,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121845754]
[2021-06-12 21:31:04,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:31:04,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:04,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:31:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:31:04,485 INFO L87 Difference]: Start difference. First operand 13338 states and 44651 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:06,761 INFO L93 Difference]: Finished difference Result 15869 states and 52420 transitions.
[2021-06-12 21:31:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-06-12 21:31:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:31:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:06,789 INFO L225 Difference]: With dead ends: 15869
[2021-06-12 21:31:06,789 INFO L226 Difference]: Without dead ends: 15749
[2021-06-12 21:31:06,790 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1854.1ms TimeCoverageRelationStatistics Valid=646, Invalid=3514, Unknown=0, NotChecked=0, Total=4160
[2021-06-12 21:31:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15749 states.
[2021-06-12 21:31:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15749 to 13338.
[2021-06-12 21:31:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13338 states, 13337 states have (on average 3.347904326310265) internal successors, (44651), 13337 states have internal predecessors, (44651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13338 states to 13338 states and 44651 transitions.
[2021-06-12 21:31:07,047 INFO L78 Accepts]: Start accepts. Automaton has 13338 states and 44651 transitions. Word has length 36
[2021-06-12 21:31:07,047 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:07,047 INFO L482 AbstractCegarLoop]: Abstraction has 13338 states and 44651 transitions.
[2021-06-12 21:31:07,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand 13338 states and 44651 transitions.
[2021-06-12 21:31:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:31:07,065 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:07,065 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:07,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1474,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:07,266 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:07,266 INFO L82 PathProgramCache]: Analyzing trace with hash -840661995, now seen corresponding path program 200 times
[2021-06-12 21:31:07,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:07,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777504935]
[2021-06-12 21:31:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:07,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:07,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777504935]
[2021-06-12 21:31:07,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777504935] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:07,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9154493]
[2021-06-12 21:31:07,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-06-12 21:31:07,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:31:07,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:07,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:31:07,540 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:08,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9154493] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:08,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:08,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:31:08,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106265232]
[2021-06-12 21:31:08,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:31:08,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:31:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:31:08,154 INFO L87 Difference]: Start difference. First operand 13338 states and 44651 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:11,363 INFO L93 Difference]: Finished difference Result 15457 states and 50589 transitions.
[2021-06-12 21:31:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2021-06-12 21:31:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:31:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:11,385 INFO L225 Difference]: With dead ends: 15457
[2021-06-12 21:31:11,385 INFO L226 Difference]: Without dead ends: 15191
[2021-06-12 21:31:11,385 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 2311.1ms TimeCoverageRelationStatistics Valid=884, Invalid=5922, Unknown=0, NotChecked=0, Total=6806
[2021-06-12 21:31:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15191 states.
[2021-06-12 21:31:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15191 to 13394.
[2021-06-12 21:31:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13394 states, 13393 states have (on average 3.3477936235346824) internal successors, (44837), 13393 states have internal predecessors, (44837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13394 states to 13394 states and 44837 transitions.
[2021-06-12 21:31:11,617 INFO L78 Accepts]: Start accepts. Automaton has 13394 states and 44837 transitions. Word has length 36
[2021-06-12 21:31:11,617 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:11,617 INFO L482 AbstractCegarLoop]: Abstraction has 13394 states and 44837 transitions.
[2021-06-12 21:31:11,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 13394 states and 44837 transitions.
[2021-06-12 21:31:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:31:11,636 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:11,636 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:11,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1481,200 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:11,836 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1495563709, now seen corresponding path program 201 times
[2021-06-12 21:31:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:11,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435757308]
[2021-06-12 21:31:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:12,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:12,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435757308]
[2021-06-12 21:31:12,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435757308] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:12,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261403644]
[2021-06-12 21:31:12,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:12,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:31:12,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:12,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-06-12 21:31:12,078 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:12,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261403644] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:12,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:12,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35
[2021-06-12 21:31:12,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182458519]
[2021-06-12 21:31:12,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-12 21:31:12,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-12 21:31:12,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260
[2021-06-12 21:31:12,615 INFO L87 Difference]: Start difference. First operand 13394 states and 44837 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:15,490 INFO L93 Difference]: Finished difference Result 16203 states and 52886 transitions.
[2021-06-12 21:31:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2021-06-12 21:31:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:31:15,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:15,514 INFO L225 Difference]: With dead ends: 16203
[2021-06-12 21:31:15,514 INFO L226 Difference]: Without dead ends: 15969
[2021-06-12 21:31:15,514 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 2263.5ms TimeCoverageRelationStatistics Valid=994, Invalid=5978, Unknown=0, NotChecked=0, Total=6972
[2021-06-12 21:31:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15969 states.
[2021-06-12 21:31:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15969 to 13413.
[2021-06-12 21:31:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13413 states, 13412 states have (on average 3.3479719654041156) internal successors, (44903), 13412 states have internal predecessors, (44903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 44903 transitions.
[2021-06-12 21:31:15,754 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 44903 transitions. Word has length 36
[2021-06-12 21:31:15,754 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:15,754 INFO L482 AbstractCegarLoop]: Abstraction has 13413 states and 44903 transitions.
[2021-06-12 21:31:15,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 44903 transitions.
[2021-06-12 21:31:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-06-12 21:31:15,771 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:15,772 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:15,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1485
[2021-06-12 21:31:15,972 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:15,972 INFO L82 PathProgramCache]: Analyzing trace with hash 464031829, now seen corresponding path program 202 times
[2021-06-12 21:31:15,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:15,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666874386]
[2021-06-12 21:31:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:16,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:16,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666874386]
[2021-06-12 21:31:16,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666874386] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:16,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671028755]
[2021-06-12 21:31:16,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:16,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:31:16,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:16,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-06-12 21:31:16,254 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:16,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671028755] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:16,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:16,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2021-06-12 21:31:16,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209784355]
[2021-06-12 21:31:16,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-12 21:31:16,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-12 21:31:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190
[2021-06-12 21:31:16,863 INFO L87 Difference]: Start difference. First operand 13413 states and 44903 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:19,301 INFO L93 Difference]: Finished difference Result 18372 states and 60615 transitions.
[2021-06-12 21:31:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2021-06-12 21:31:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2021-06-12 21:31:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:19,332 INFO L225 Difference]: With dead ends: 18372
[2021-06-12 21:31:19,333 INFO L226 Difference]: Without dead ends: 18179
[2021-06-12 21:31:19,333 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1936.8ms TimeCoverageRelationStatistics Valid=781, Invalid=4475, Unknown=0, NotChecked=0, Total=5256
[2021-06-12 21:31:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18179 states.
[2021-06-12 21:31:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18179 to 13338.
[2021-06-12 21:31:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13338 states, 13337 states have (on average 3.3476044087875834) internal successors, (44647), 13337 states have internal predecessors, (44647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13338 states to 13338 states and 44647 transitions.
[2021-06-12 21:31:19,622 INFO L78 Accepts]: Start accepts. Automaton has 13338 states and 44647 transitions. Word has length 36
[2021-06-12 21:31:19,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:19,623 INFO L482 AbstractCegarLoop]: Abstraction has 13338 states and 44647 transitions.
[2021-06-12 21:31:19,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 13338 states and 44647 transitions.
[2021-06-12 21:31:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:19,640 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:19,641 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:19,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1489
[2021-06-12 21:31:19,848 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash -13033305, now seen corresponding path program 203 times
[2021-06-12 21:31:19,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:19,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461998799]
[2021-06-12 21:31:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-06-12 21:31:20,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:20,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461998799]
[2021-06-12 21:31:20,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461998799] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:20,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140703615]
[2021-06-12 21:31:20,037 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:20,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:31:20,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:20,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:31:20,063 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:20,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140703615] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:20,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:20,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36
[2021-06-12 21:31:20,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134547506]
[2021-06-12 21:31:20,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:31:20,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:20,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:31:20,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1165, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:31:20,715 INFO L87 Difference]: Start difference. First operand 13338 states and 44647 transitions. Second operand has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:22,433 INFO L93 Difference]: Finished difference Result 14827 states and 48631 transitions.
[2021-06-12 21:31:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2021-06-12 21:31:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:22,458 INFO L225 Difference]: With dead ends: 14827
[2021-06-12 21:31:22,458 INFO L226 Difference]: Without dead ends: 14785
[2021-06-12 21:31:22,458 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 1609.3ms TimeCoverageRelationStatistics Valid=602, Invalid=3688, Unknown=0, NotChecked=0, Total=4290
[2021-06-12 21:31:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14785 states.
[2021-06-12 21:31:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14785 to 13924.
[2021-06-12 21:31:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13924 states, 13923 states have (on average 3.326150973209797) internal successors, (46310), 13923 states have internal predecessors, (46310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13924 states to 13924 states and 46310 transitions.
[2021-06-12 21:31:22,739 INFO L78 Accepts]: Start accepts. Automaton has 13924 states and 46310 transitions. Word has length 38
[2021-06-12 21:31:22,739 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:22,739 INFO L482 AbstractCegarLoop]: Abstraction has 13924 states and 46310 transitions.
[2021-06-12 21:31:22,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13924 states and 46310 transitions.
[2021-06-12 21:31:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:22,757 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:22,757 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:22,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1494,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:22,958 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:22,958 INFO L82 PathProgramCache]: Analyzing trace with hash -850960473, now seen corresponding path program 204 times
[2021-06-12 21:31:22,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:22,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789395279]
[2021-06-12 21:31:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-06-12 21:31:23,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:23,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789395279]
[2021-06-12 21:31:23,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789395279] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:23,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013553041]
[2021-06-12 21:31:23,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:23,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2021-06-12 21:31:23,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:23,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-06-12 21:31:23,206 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:24,167 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61
[2021-06-12 21:31:24,466 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74
[2021-06-12 21:31:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:24,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013553041] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:24,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:24,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37
[2021-06-12 21:31:24,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8345783]
[2021-06-12 21:31:24,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:31:24,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:24,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:31:24,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:31:24,680 INFO L87 Difference]: Start difference. First operand 13924 states and 46310 transitions. Second operand has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:27,884 INFO L93 Difference]: Finished difference Result 14836 states and 48769 transitions.
[2021-06-12 21:31:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2021-06-12 21:31:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:27,909 INFO L225 Difference]: With dead ends: 14836
[2021-06-12 21:31:27,910 INFO L226 Difference]: Without dead ends: 14784
[2021-06-12 21:31:27,910 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 2850.3ms TimeCoverageRelationStatistics Valid=655, Invalid=4601, Unknown=0, NotChecked=0, Total=5256
[2021-06-12 21:31:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14784 states.
[2021-06-12 21:31:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14784 to 13574.
[2021-06-12 21:31:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13573 states have (on average 3.340381640020629) internal successors, (45339), 13573 states have internal predecessors, (45339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 45339 transitions.
[2021-06-12 21:31:28,170 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 45339 transitions. Word has length 38
[2021-06-12 21:31:28,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:28,170 INFO L482 AbstractCegarLoop]: Abstraction has 13574 states and 45339 transitions.
[2021-06-12 21:31:28,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 45339 transitions.
[2021-06-12 21:31:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:28,187 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:28,187 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:28,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1503
[2021-06-12 21:31:28,388 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:28,388 INFO L82 PathProgramCache]: Analyzing trace with hash -543646297, now seen corresponding path program 205 times
[2021-06-12 21:31:28,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:28,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29582261]
[2021-06-12 21:31:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:28,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:28,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29582261]
[2021-06-12 21:31:28,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29582261] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:28,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272387681]
[2021-06-12 21:31:28,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:28,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-06-12 21:31:28,725 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:29,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272387681] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:29,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:29,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42
[2021-06-12 21:31:29,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200500393]
[2021-06-12 21:31:29,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-12 21:31:29,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-12 21:31:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1530, Unknown=0, NotChecked=0, Total=1806
[2021-06-12 21:31:29,484 INFO L87 Difference]: Start difference. First operand 13574 states and 45339 transitions. Second operand has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:31,047 INFO L93 Difference]: Finished difference Result 14425 states and 47520 transitions.
[2021-06-12 21:31:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2021-06-12 21:31:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:31,071 INFO L225 Difference]: With dead ends: 14425
[2021-06-12 21:31:31,071 INFO L226 Difference]: Without dead ends: 14356
[2021-06-12 21:31:31,071 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1759.9ms TimeCoverageRelationStatistics Valid=896, Invalid=4360, Unknown=0, NotChecked=0, Total=5256
[2021-06-12 21:31:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states.
[2021-06-12 21:31:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 13822.
[2021-06-12 21:31:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 3.333116272339194) internal successors, (46067), 13821 states have internal predecessors, (46067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 46067 transitions.
[2021-06-12 21:31:31,299 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 46067 transitions. Word has length 38
[2021-06-12 21:31:31,300 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:31,300 INFO L482 AbstractCegarLoop]: Abstraction has 13822 states and 46067 transitions.
[2021-06-12 21:31:31,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 46067 transitions.
[2021-06-12 21:31:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:31,319 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:31,319 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:31,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1523,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:31,519 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:31,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2039618983, now seen corresponding path program 206 times
[2021-06-12 21:31:31,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:31,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824702429]
[2021-06-12 21:31:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:31,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:31,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824702429]
[2021-06-12 21:31:31,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824702429] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:31,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704665641]
[2021-06-12 21:31:31,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:31,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:31:31,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:31,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:31:31,787 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:32,539 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55
[2021-06-12 21:31:32,850 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58
[2021-06-12 21:31:33,072 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68
[2021-06-12 21:31:33,262 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 58
[2021-06-12 21:31:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:33,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704665641] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:33,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:33,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 38
[2021-06-12 21:31:33,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538732596]
[2021-06-12 21:31:33,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states
[2021-06-12 21:31:33,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:33,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2021-06-12 21:31:33,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482
[2021-06-12 21:31:33,324 INFO L87 Difference]: Start difference. First operand 13822 states and 46067 transitions. Second operand has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:36,759 INFO L93 Difference]: Finished difference Result 15436 states and 50357 transitions.
[2021-06-12 21:31:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:31:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:36,785 INFO L225 Difference]: With dead ends: 15436
[2021-06-12 21:31:36,786 INFO L226 Difference]: Without dead ends: 15384
[2021-06-12 21:31:36,786 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 3148.0ms TimeCoverageRelationStatistics Valid=959, Invalid=5847, Unknown=0, NotChecked=0, Total=6806
[2021-06-12 21:31:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15384 states.
[2021-06-12 21:31:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15384 to 14212.
[2021-06-12 21:31:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14212 states, 14211 states have (on average 3.3232003377665187) internal successors, (47226), 14211 states have internal predecessors, (47226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14212 states to 14212 states and 47226 transitions.
[2021-06-12 21:31:37,057 INFO L78 Accepts]: Start accepts. Automaton has 14212 states and 47226 transitions. Word has length 38
[2021-06-12 21:31:37,057 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:37,057 INFO L482 AbstractCegarLoop]: Abstraction has 14212 states and 47226 transitions.
[2021-06-12 21:31:37,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14212 states and 47226 transitions.
[2021-06-12 21:31:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:37,076 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:37,076 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:37,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1532
[2021-06-12 21:31:37,289 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:37,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:37,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691815, now seen corresponding path program 207 times
[2021-06-12 21:31:37,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:37,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636828395]
[2021-06-12 21:31:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-12 21:31:37,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:37,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636828395]
[2021-06-12 21:31:37,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636828395] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:37,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858353835]
[2021-06-12 21:31:37,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:37,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-12 21:31:37,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:37,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:31:37,559 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:38,520 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59
[2021-06-12 21:31:38,849 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70
[2021-06-12 21:31:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:39,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858353835] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:39,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:39,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37
[2021-06-12 21:31:39,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220390927]
[2021-06-12 21:31:39,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:31:39,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:39,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:31:39,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:31:39,041 INFO L87 Difference]: Start difference. First operand 14212 states and 47226 transitions. Second operand has 38 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:42,456 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76
[2021-06-12 21:31:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:42,931 INFO L93 Difference]: Finished difference Result 15675 states and 51224 transitions.
[2021-06-12 21:31:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2021-06-12 21:31:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:42,954 INFO L225 Difference]: With dead ends: 15675
[2021-06-12 21:31:42,954 INFO L226 Difference]: Without dead ends: 15608
[2021-06-12 21:31:42,955 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 3573.6ms TimeCoverageRelationStatistics Valid=969, Invalid=5837, Unknown=0, NotChecked=0, Total=6806
[2021-06-12 21:31:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15608 states.
[2021-06-12 21:31:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15608 to 14560.
[2021-06-12 21:31:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14560 states, 14559 states have (on average 3.315337591867573) internal successors, (48268), 14559 states have internal predecessors, (48268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14560 states to 14560 states and 48268 transitions.
[2021-06-12 21:31:43,206 INFO L78 Accepts]: Start accepts. Automaton has 14560 states and 48268 transitions. Word has length 38
[2021-06-12 21:31:43,206 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:43,206 INFO L482 AbstractCegarLoop]: Abstraction has 14560 states and 48268 transitions.
[2021-06-12 21:31:43,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14560 states and 48268 transitions.
[2021-06-12 21:31:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:43,225 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:43,225 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:43,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1550
[2021-06-12 21:31:43,425 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash -887432281, now seen corresponding path program 208 times
[2021-06-12 21:31:43,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:43,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143133524]
[2021-06-12 21:31:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-12 21:31:43,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:43,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143133524]
[2021-06-12 21:31:43,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143133524] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:43,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393723151]
[2021-06-12 21:31:43,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:43,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:31:43,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:43,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-06-12 21:31:43,738 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:44,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393723151] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:44,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:44,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 41
[2021-06-12 21:31:44,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74526]
[2021-06-12 21:31:44,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states
[2021-06-12 21:31:44,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2021-06-12 21:31:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1415, Unknown=0, NotChecked=0, Total=1722
[2021-06-12 21:31:44,472 INFO L87 Difference]: Start difference. First operand 14560 states and 48268 transitions. Second operand has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 41 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:45,874 INFO L93 Difference]: Finished difference Result 15212 states and 49915 transitions.
[2021-06-12 21:31:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-06-12 21:31:45,874 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 41 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:45,897 INFO L225 Difference]: With dead ends: 15212
[2021-06-12 21:31:45,897 INFO L226 Difference]: Without dead ends: 15158
[2021-06-12 21:31:45,897 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 1529.6ms TimeCoverageRelationStatistics Valid=814, Invalid=3608, Unknown=0, NotChecked=0, Total=4422
[2021-06-12 21:31:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15158 states.
[2021-06-12 21:31:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15158 to 14648.
[2021-06-12 21:31:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14648 states, 14647 states have (on average 3.312896838943128) internal successors, (48524), 14647 states have internal predecessors, (48524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14648 states to 14648 states and 48524 transitions.
[2021-06-12 21:31:46,140 INFO L78 Accepts]: Start accepts. Automaton has 14648 states and 48524 transitions. Word has length 38
[2021-06-12 21:31:46,140 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:46,140 INFO L482 AbstractCegarLoop]: Abstraction has 14648 states and 48524 transitions.
[2021-06-12 21:31:46,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 41 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14648 states and 48524 transitions.
[2021-06-12 21:31:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:46,159 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:46,159 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:46,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1567,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:46,359 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:46,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1509005991, now seen corresponding path program 209 times
[2021-06-12 21:31:46,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:46,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854555418]
[2021-06-12 21:31:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:46,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:46,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854555418]
[2021-06-12 21:31:46,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854555418] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:46,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390386734]
[2021-06-12 21:31:46,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:46,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-12 21:31:46,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:46,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-12 21:31:46,734 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:47,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390386734] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:47,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:47,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44
[2021-06-12 21:31:47,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515216708]
[2021-06-12 21:31:47,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-12 21:31:47,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:47,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-12 21:31:47,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1650, Unknown=0, NotChecked=0, Total=1980
[2021-06-12 21:31:47,519 INFO L87 Difference]: Start difference. First operand 14648 states and 48524 transitions. Second operand has 45 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 44 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:49,455 INFO L93 Difference]: Finished difference Result 15560 states and 50807 transitions.
[2021-06-12 21:31:49,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2021-06-12 21:31:49,456 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 44 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:49,482 INFO L225 Difference]: With dead ends: 15560
[2021-06-12 21:31:49,482 INFO L226 Difference]: Without dead ends: 15506
[2021-06-12 21:31:49,483 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 2133.8ms TimeCoverageRelationStatistics Valid=1242, Invalid=5730, Unknown=0, NotChecked=0, Total=6972
[2021-06-12 21:31:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15506 states.
[2021-06-12 21:31:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15506 to 14716.
[2021-06-12 21:31:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14716 states, 14715 states have (on average 3.311858647638464) internal successors, (48734), 14715 states have internal predecessors, (48734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14716 states to 14716 states and 48734 transitions.
[2021-06-12 21:31:49,743 INFO L78 Accepts]: Start accepts. Automaton has 14716 states and 48734 transitions. Word has length 38
[2021-06-12 21:31:49,743 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:49,743 INFO L482 AbstractCegarLoop]: Abstraction has 14716 states and 48734 transitions.
[2021-06-12 21:31:49,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 44 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 14716 states and 48734 transitions.
[2021-06-12 21:31:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:49,763 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:49,764 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:49,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1576
[2021-06-12 21:31:49,964 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:49,964 INFO L82 PathProgramCache]: Analyzing trace with hash 568201891, now seen corresponding path program 210 times
[2021-06-12 21:31:49,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:49,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339220186]
[2021-06-12 21:31:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:50,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:50,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339220186]
[2021-06-12 21:31:50,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339220186] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:50,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654719934]
[2021-06-12 21:31:50,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:50,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-12 21:31:50,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:31:50,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-06-12 21:31:50,396 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:51,365 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59
[2021-06-12 21:31:51,630 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68
[2021-06-12 21:31:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:51,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654719934] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:51,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:51,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 42
[2021-06-12 21:31:51,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426852594]
[2021-06-12 21:31:51,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-12 21:31:51,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-12 21:31:51,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806
[2021-06-12 21:31:51,835 INFO L87 Difference]: Start difference. First operand 14716 states and 48734 transitions. Second operand has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:31:55,731 INFO L93 Difference]: Finished difference Result 17167 states and 55569 transitions.
[2021-06-12 21:31:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2021-06-12 21:31:55,731 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:31:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:31:55,761 INFO L225 Difference]: With dead ends: 17167
[2021-06-12 21:31:55,761 INFO L226 Difference]: Without dead ends: 17088
[2021-06-12 21:31:55,761 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 3141.3ms TimeCoverageRelationStatistics Valid=1079, Invalid=6231, Unknown=0, NotChecked=0, Total=7310
[2021-06-12 21:31:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states.
[2021-06-12 21:31:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 15262.
[2021-06-12 21:31:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15262 states, 15261 states have (on average 3.3067295721119194) internal successors, (50464), 15261 states have internal predecessors, (50464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15262 states to 15262 states and 50464 transitions.
[2021-06-12 21:31:56,132 INFO L78 Accepts]: Start accepts. Automaton has 15262 states and 50464 transitions. Word has length 38
[2021-06-12 21:31:56,132 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:31:56,132 INFO L482 AbstractCegarLoop]: Abstraction has 15262 states and 50464 transitions.
[2021-06-12 21:31:56,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.697674418604651) internal successors, (73), 42 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:31:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 15262 states and 50464 transitions.
[2021-06-12 21:31:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:31:56,152 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:31:56,152 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:31:56,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1577
[2021-06-12 21:31:56,365 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:31:56,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:31:56,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1254454179, now seen corresponding path program 211 times
[2021-06-12 21:31:56,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:31:56,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960159623]
[2021-06-12 21:31:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:31:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-12 21:31:56,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:31:56,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960159623]
[2021-06-12 21:31:56,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960159623] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:56,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852225635]
[2021-06-12 21:31:56,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:31:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:31:56,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:31:56,647 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:31:57,443 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55
[2021-06-12 21:31:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:31:57,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852225635] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:31:57,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:31:57,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37
[2021-06-12 21:31:57,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20134295]
[2021-06-12 21:31:57,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-12 21:31:57,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:31:57,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-12 21:31:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406
[2021-06-12 21:31:57,658 INFO L87 Difference]: Start difference. First operand 15262 states and 50464 transitions. Second operand has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:00,946 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56
[2021-06-12 21:32:01,141 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60
[2021-06-12 21:32:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:32:02,003 INFO L93 Difference]: Finished difference Result 22246 states and 71113 transitions.
[2021-06-12 21:32:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2021-06-12 21:32:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:32:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:32:02,038 INFO L225 Difference]: With dead ends: 22246
[2021-06-12 21:32:02,038 INFO L226 Difference]: Without dead ends: 22204
[2021-06-12 21:32:02,039 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 3434.4ms TimeCoverageRelationStatistics Valid=1255, Invalid=8251, Unknown=0, NotChecked=0, Total=9506
[2021-06-12 21:32:02,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22204 states.
[2021-06-12 21:32:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22204 to 16424.
[2021-06-12 21:32:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16424 states, 16423 states have (on average 3.301589234609998) internal successors, (54222), 16423 states have internal predecessors, (54222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 54222 transitions.
[2021-06-12 21:32:02,361 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 54222 transitions. Word has length 38
[2021-06-12 21:32:02,361 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:32:02,361 INFO L482 AbstractCegarLoop]: Abstraction has 16424 states and 54222 transitions.
[2021-06-12 21:32:02,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 54222 transitions.
[2021-06-12 21:32:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:32:02,383 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:32:02,383 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:32:02,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1594
[2021-06-12 21:32:02,597 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:32:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:32:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1694493785, now seen corresponding path program 212 times
[2021-06-12 21:32:02,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:32:02,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819355050]
[2021-06-12 21:32:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:32:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:32:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-12 21:32:02,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:32:02,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819355050]
[2021-06-12 21:32:02,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819355050] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:32:02,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339426470]
[2021-06-12 21:32:02,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:32:02,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-12 21:32:02,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:32:02,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:32:02,851 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:32:03,582 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55
[2021-06-12 21:32:03,745 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56
[2021-06-12 21:32:03,917 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60
[2021-06-12 21:32:04,227 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72
[2021-06-12 21:32:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:32:04,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339426470] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:32:04,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:32:04,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36
[2021-06-12 21:32:04,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538009326]
[2021-06-12 21:32:04,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states
[2021-06-12 21:32:04,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:32:04,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2021-06-12 21:32:04,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1160, Unknown=0, NotChecked=0, Total=1332
[2021-06-12 21:32:04,430 INFO L87 Difference]: Start difference. First operand 16424 states and 54222 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:08,585 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59
[2021-06-12 21:32:08,737 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60
[2021-06-12 21:32:09,026 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61
[2021-06-12 21:32:09,274 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62
[2021-06-12 21:32:09,456 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64
[2021-06-12 21:32:09,862 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66
[2021-06-12 21:32:10,287 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73
[2021-06-12 21:32:10,534 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74
[2021-06-12 21:32:10,754 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77
[2021-06-12 21:32:11,252 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76
[2021-06-12 21:32:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:32:11,700 INFO L93 Difference]: Finished difference Result 22695 states and 72511 transitions.
[2021-06-12 21:32:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states.
[2021-06-12 21:32:11,701 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:32:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:32:11,736 INFO L225 Difference]: With dead ends: 22695
[2021-06-12 21:32:11,737 INFO L226 Difference]: Without dead ends: 22606
[2021-06-12 21:32:11,737 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3036 ImplicationChecksByTransitivity, 6163.3ms TimeCoverageRelationStatistics Valid=1342, Invalid=8960, Unknown=0, NotChecked=0, Total=10302
[2021-06-12 21:32:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22606 states.
[2021-06-12 21:32:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22606 to 16429.
[2021-06-12 21:32:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16429 states, 16428 states have (on average 3.301984416849282) internal successors, (54245), 16428 states have internal predecessors, (54245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16429 states to 16429 states and 54245 transitions.
[2021-06-12 21:32:12,069 INFO L78 Accepts]: Start accepts. Automaton has 16429 states and 54245 transitions. Word has length 38
[2021-06-12 21:32:12,069 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:32:12,069 INFO L482 AbstractCegarLoop]: Abstraction has 16429 states and 54245 transitions.
[2021-06-12 21:32:12,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 16429 states and 54245 transitions.
[2021-06-12 21:32:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:32:12,089 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:32:12,089 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:32:12,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1605,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:32:12,290 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:32:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:32:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash 739562091, now seen corresponding path program 213 times
[2021-06-12 21:32:12,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:32:12,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118617436]
[2021-06-12 21:32:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:32:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:32:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:32:12,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:32:12,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118617436]
[2021-06-12 21:32:12,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118617436] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:32:12,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268149176]
[2021-06-12 21:32:12,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:32:12,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-12 21:32:12,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:32:12,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-06-12 21:32:12,606 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-12 21:32:13,352 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46
[2021-06-12 21:32:13,620 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61
[2021-06-12 21:32:13,911 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74
[2021-06-12 21:32:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:32:14,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268149176] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:32:14,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-12 21:32:14,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40
[2021-06-12 21:32:14,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168773747]
[2021-06-12 21:32:14,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states
[2021-06-12 21:32:14,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-12 21:32:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2021-06-12 21:32:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1450, Unknown=0, NotChecked=0, Total=1640
[2021-06-12 21:32:14,111 INFO L87 Difference]: Start difference. First operand 16429 states and 54245 transitions. Second operand has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 40 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:17,382 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62
[2021-06-12 21:32:17,945 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75
[2021-06-12 21:32:18,178 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80
[2021-06-12 21:32:18,419 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79
[2021-06-12 21:32:18,829 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81
[2021-06-12 21:32:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-12 21:32:19,372 INFO L93 Difference]: Finished difference Result 24133 states and 76709 transitions.
[2021-06-12 21:32:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2021-06-12 21:32:19,372 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 40 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2021-06-12 21:32:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-12 21:32:19,467 INFO L225 Difference]: With dead ends: 24133
[2021-06-12 21:32:19,467 INFO L226 Difference]: Without dead ends: 24051
[2021-06-12 21:32:19,468 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2778 ImplicationChecksByTransitivity, 4619.0ms TimeCoverageRelationStatistics Valid=1203, Invalid=8303, Unknown=0, NotChecked=0, Total=9506
[2021-06-12 21:32:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24051 states.
[2021-06-12 21:32:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24051 to 16647.
[2021-06-12 21:32:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16647 states, 16646 states have (on average 3.3071608794905685) internal successors, (55051), 16646 states have internal predecessors, (55051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16647 states to 16647 states and 55051 transitions.
[2021-06-12 21:32:19,802 INFO L78 Accepts]: Start accepts. Automaton has 16647 states and 55051 transitions. Word has length 38
[2021-06-12 21:32:19,802 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-12 21:32:19,802 INFO L482 AbstractCegarLoop]: Abstraction has 16647 states and 55051 transitions.
[2021-06-12 21:32:19,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 40 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-12 21:32:19,802 INFO L276 IsEmpty]: Start isEmpty. Operand 16647 states and 55051 transitions.
[2021-06-12 21:32:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-06-12 21:32:19,824 INFO L464 BasicCegarLoop]: Found error trace
[2021-06-12 21:32:19,824 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-12 21:32:20,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1625,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:32:20,024 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-12 21:32:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-12 21:32:20,025 INFO L82 PathProgramCache]: Analyzing trace with hash 696203939, now seen corresponding path program 214 times
[2021-06-12 21:32:20,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-12 21:32:20,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480752907]
[2021-06-12 21:32:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-12 21:32:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-12 21:32:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-12 21:32:20,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-12 21:32:20,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480752907]
[2021-06-12 21:32:20,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480752907] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-12 21:32:20,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838349448]
[2021-06-12 21:32:20,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-12 21:32:20,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-12 21:32:20,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-12 21:32:20,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-06-12 21:32:20,310 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Received shutdown request...
[2021-06-12 21:32:20,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1645
[2021-06-12 21:32:20,957 WARN L547 AbstractCegarLoop]: Verification canceled
[2021-06-12 21:32:20,959 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2021-06-12 21:32:20,960 WARN L196 ceAbstractionStarter]: Timeout
[2021-06-12 21:32:20,960 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 09:32:20 BasicIcfg
[2021-06-12 21:32:20,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-06-12 21:32:20,960 INFO L168 Benchmark]: Toolchain (without parser) took 795664.13 ms. Allocated memory was 186.6 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 166.4 MB in the beginning and 606.7 MB in the end (delta: -440.3 MB). Peak memory consumption was 811.3 MB. Max. memory is 8.0 GB.
[2021-06-12 21:32:20,961 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 186.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-06-12 21:32:20,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 186.6 MB. Free memory was 166.4 MB in the beginning and 165.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-06-12 21:32:20,961 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 186.6 MB. Free memory was 165.0 MB in the beginning and 163.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-06-12 21:32:20,961 INFO L168 Benchmark]: RCFGBuilder took 215.53 ms. Allocated memory is still 186.6 MB. Free memory was 163.9 MB in the beginning and 149.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-06-12 21:32:20,961 INFO L168 Benchmark]: TraceAbstraction took 795412.50 ms. Allocated memory was 186.6 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 149.1 MB in the beginning and 607.2 MB in the end (delta: -458.1 MB). Peak memory consumption was 793.5 MB. Max. memory is 8.0 GB.
[2021-06-12 21:32:20,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 186.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
* Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 186.6 MB. Free memory was 166.4 MB in the beginning and 165.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB.
* Boogie Preprocessor took 11.61 ms. Allocated memory is still 186.6 MB. Free memory was 165.0 MB in the beginning and 163.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 215.53 ms. Allocated memory is still 186.6 MB. Free memory was 163.9 MB in the beginning and 149.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 795412.50 ms. Allocated memory was 186.6 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 149.1 MB in the beginning and 607.2 MB in the end (delta: -458.1 MB). Peak memory consumption was 793.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 39 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates.
- StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances
CFG has 7 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 795326.9ms, OverallIterations: 217, TraceHistogramMax: 4, EmptinessCheckTime: 2737.8ms, AutomataDifference: 518585.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7275 SDtfs, 78168 SDslu, 107231 SDs, 0 SdLazy, 448943 SolverSat, 37097 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 170134.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18780 GetRequests, 4003 SyntacticMatches, 398 SemanticMatches, 14379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316535 ImplicationChecksByTransitivity, 439938.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16647occurred in iteration=216, InterpolantAutomatonStates: 12722, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42144.9ms AutomataMinimizationTime, 216 MinimizatonAttempts, 963618 StatesRemovedByMinimization, 214 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 714.5ms SsaConstructionTime, 1970.9ms SatisfiabilityAnalysisTime, 180526.4ms InterpolantComputationTime, 15114 NumberOfCodeBlocks, 15114 NumberOfCodeBlocksAsserted, 905 NumberOfCheckSat, 14686 ConstructedInterpolants, 0 QuantifiedInterpolants, 352214 SizeOfPredicates, 1433 NumberOfNonLiveVariables, 13656 ConjunctsInSsa, 4549 ConjunctsInUnsatCore, 428 InterpolantComputations, 4 PerfectInterpolantSequences, 206/8062 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown