/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-more/min-array-hom.wvr.bpl
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This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f
[2021-08-12 19:54:48,879 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-08-12 19:54:48,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
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[2021-08-12 19:54:48,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-08-12 19:54:48,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-08-12 19:54:48,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-08-12 19:54:48,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-08-12 19:54:48,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-08-12 19:54:48,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-08-12 19:54:48,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-08-12 19:54:48,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-08-12 19:54:48,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-08-12 19:54:48,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-08-12 19:54:48,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2021-08-12 19:54:48,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2021-08-12 19:54:48,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-08-12 19:54:48,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-08-12 19:54:48,994 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
[2021-08-12 19:54:49,029 INFO L113 SettingsManager]: Loading preferences was successful
[2021-08-12 19:54:49,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-08-12 19:54:49,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-08-12 19:54:49,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-08-12 19:54:49,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-08-12 19:54:49,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-08-12 19:54:49,032 INFO L138 SettingsManager]: * Use SBE=true
[2021-08-12 19:54:49,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-08-12 19:54:49,033 INFO L138 SettingsManager]: * sizeof long=4
[2021-08-12 19:54:49,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-08-12 19:54:49,034 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-08-12 19:54:49,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-08-12 19:54:49,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-08-12 19:54:49,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-08-12 19:54:49,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-08-12 19:54:49,035 INFO L138 SettingsManager]: * sizeof long double=12
[2021-08-12 19:54:49,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-08-12 19:54:49,035 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-08-12 19:54:49,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-08-12 19:54:49,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-08-12 19:54:49,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-08-12 19:54:49,036 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-08-12 19:54:49,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-08-12 19:54:49,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-08-12 19:54:49,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-08-12 19:54:49,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-08-12 19:54:49,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-08-12 19:54:49,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-08-12 19:54:49,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-08-12 19:54:49,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-08-12 19:54:49,037 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-08-12 19:54:49,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-08-12 19:54:49,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-08-12 19:54:49,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-08-12 19:54:49,418 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-08-12 19:54:49,419 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2021-08-12 19:54:49,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl
[2021-08-12 19:54:49,420 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl'
[2021-08-12 19:54:49,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-08-12 19:54:49,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-08-12 19:54:49,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-08-12 19:54:49,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-08-12 19:54:49,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-08-12 19:54:49,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-08-12 19:54:49,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-08-12 19:54:49,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-08-12 19:54:49,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-08-12 19:54:49,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/1) ...
[2021-08-12 19:54:49,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-08-12 19:54:49,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-08-12 19:54:49,528 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-08-12 19:54:49,528 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-08-12 19:54:49,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (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
[2021-08-12 19:54:49,595 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-08-12 19:54:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2021-08-12 19:54:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2021-08-12 19:54:49,596 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-08-12 19:54:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2021-08-12 19:54:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2021-08-12 19:54:49,597 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-08-12 19:54:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-08-12 19:54:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-08-12 19:54:49,597 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2021-08-12 19:54:49,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2021-08-12 19:54:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2021-08-12 19:54:49,598 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-08-12 19:54:49,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-08-12 19:54:49,844 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-08-12 19:54:49,845 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:54:49 BoogieIcfgContainer
[2021-08-12 19:54:49,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-08-12 19:54:49,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-08-12 19:54:49,847 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-08-12 19:54:49,849 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-08-12 19:54:49,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:54:49" (1/2) ...
[2021-08-12 19:54:49,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14088429 and model type min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 07:54:49, skipping insertion in model container
[2021-08-12 19:54:49,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:54:49" (2/2) ...
[2021-08-12 19:54:49,851 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array-hom.wvr.bpl
[2021-08-12 19:54:49,869 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-08-12 19:54:49,869 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-08-12 19:54:49,870 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-08-12 19:54:49,904 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2021-08-12 19:54:49,922 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-08-12 19:54:49,940 INFO L378 AbstractCegarLoop]: Interprodecural is true
[2021-08-12 19:54:49,940 INFO L379 AbstractCegarLoop]: Hoare is true
[2021-08-12 19:54:49,940 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-08-12 19:54:49,940 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-08-12 19:54:49,941 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-08-12 19:54:49,941 INFO L383 AbstractCegarLoop]: Difference is false
[2021-08-12 19:54:49,941 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-08-12 19:54:49,941 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-08-12 19:54:49,949 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow
[2021-08-12 19:54:49,966 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-08-12 19:54:49,978 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:49,978 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-08-12 19:54:49,979 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:49,983 INFO L82 PathProgramCache]: Analyzing trace with hash -986458276, now seen corresponding path program 1 times
[2021-08-12 19:54:49,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:49,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839695859]
[2021-08-12 19:54:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:50,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:50,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839695859]
[2021-08-12 19:54:50,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839695859] provided 1 perfect and 0 imperfect interpolant sequences
[2021-08-12 19:54:50,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-08-12 19:54:50,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-08-12 19:54:50,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998334125]
[2021-08-12 19:54:50,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-08-12 19:54:50,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:50,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-08-12 19:54:50,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-08-12 19:54:50,198 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 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 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:50,248 INFO L93 Difference]: Finished difference Result 221 states and 622 transitions.
[2021-08-12 19:54:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-08-12 19:54:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18
[2021-08-12 19:54:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:50,261 INFO L225 Difference]: With dead ends: 221
[2021-08-12 19:54:50,261 INFO L226 Difference]: Without dead ends: 202
[2021-08-12 19:54:50,263 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-08-12 19:54:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2021-08-12 19:54:50,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149.
[2021-08-12 19:54:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions.
[2021-08-12 19:54:50,308 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18
[2021-08-12 19:54:50,309 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:50,309 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions.
[2021-08-12 19:54:50,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions.
[2021-08-12 19:54:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-08-12 19:54:50,311 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:50,311 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-08-12 19:54:50,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-08-12 19:54:50,312 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:50,313 INFO L82 PathProgramCache]: Analyzing trace with hash -433058596, now seen corresponding path program 1 times
[2021-08-12 19:54:50,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:50,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521868904]
[2021-08-12 19:54:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:54:50,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:50,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521868904]
[2021-08-12 19:54:50,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521868904] provided 1 perfect and 0 imperfect interpolant sequences
[2021-08-12 19:54:50,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-08-12 19:54:50,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-08-12 19:54:50,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301666364]
[2021-08-12 19:54:50,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-08-12 19:54:50,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:50,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-08-12 19:54:50,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-08-12 19:54:50,391 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:50,482 INFO L93 Difference]: Finished difference Result 215 states and 608 transitions.
[2021-08-12 19:54:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-08-12 19:54:50,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20
[2021-08-12 19:54:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:50,485 INFO L225 Difference]: With dead ends: 215
[2021-08-12 19:54:50,485 INFO L226 Difference]: Without dead ends: 158
[2021-08-12 19:54:50,486 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-08-12 19:54:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2021-08-12 19:54:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133.
[2021-08-12 19:54:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions.
[2021-08-12 19:54:50,500 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20
[2021-08-12 19:54:50,500 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:50,500 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions.
[2021-08-12 19:54:50,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions.
[2021-08-12 19:54:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-08-12 19:54:50,502 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:50,502 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-08-12 19:54:50,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-08-12 19:54:50,502 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash 275548602, now seen corresponding path program 1 times
[2021-08-12 19:54:50,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:50,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842118296]
[2021-08-12 19:54:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:54:50,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:50,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842118296]
[2021-08-12 19:54:50,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842118296] provided 1 perfect and 0 imperfect interpolant sequences
[2021-08-12 19:54:50,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-08-12 19:54:50,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-08-12 19:54:50,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231469532]
[2021-08-12 19:54:50,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-08-12 19:54:50,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:50,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-08-12 19:54:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-08-12 19:54:50,552 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:50,670 INFO L93 Difference]: Finished difference Result 261 states and 743 transitions.
[2021-08-12 19:54:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-08-12 19:54:50,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20
[2021-08-12 19:54:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:50,673 INFO L225 Difference]: With dead ends: 261
[2021-08-12 19:54:50,676 INFO L226 Difference]: Without dead ends: 183
[2021-08-12 19:54:50,677 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-08-12 19:54:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2021-08-12 19:54:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158.
[2021-08-12 19:54:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions.
[2021-08-12 19:54:50,697 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20
[2021-08-12 19:54:50,697 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:50,697 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions.
[2021-08-12 19:54:50,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions.
[2021-08-12 19:54:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-08-12 19:54:50,699 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:50,699 INFO L550 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]
[2021-08-12 19:54:50,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-08-12 19:54:50,699 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash -483303622, now seen corresponding path program 1 times
[2021-08-12 19:54:50,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:50,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744447898]
[2021-08-12 19:54:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:51,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:51,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744447898]
[2021-08-12 19:54:51,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744447898] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:51,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961615048]
[2021-08-12 19:54:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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
[2021-08-12 19:54:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:51,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-08-12 19:54:51,197 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:51,754 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:51,754 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:51,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10
[2021-08-12 19:54:51,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:51,766 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:51,767 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:51,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-08-12 19:54:51,771 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:51,779 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:51,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-08-12 19:54:51,781 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:51,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:51,802 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:54:51,802 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:97, output treesize:21
[2021-08-12 19:54:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:51,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961615048] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:51,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:51,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:54:51,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198378033]
[2021-08-12 19:54:51,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:54:51,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:51,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:54:51,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:54:51,847 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:52,156 INFO L93 Difference]: Finished difference Result 332 states and 937 transitions.
[2021-08-12 19:54:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-08-12 19:54:52,156 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 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 22
[2021-08-12 19:54:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:52,159 INFO L225 Difference]: With dead ends: 332
[2021-08-12 19:54:52,159 INFO L226 Difference]: Without dead ends: 315
[2021-08-12 19:54:52,160 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 534.5ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:54:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states.
[2021-08-12 19:54:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224.
[2021-08-12 19:54:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions.
[2021-08-12 19:54:52,178 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22
[2021-08-12 19:54:52,178 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:52,178 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions.
[2021-08-12 19:54:52,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions.
[2021-08-12 19:54:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-08-12 19:54:52,180 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:52,180 INFO L550 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]
[2021-08-12 19:54:52,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:54:52,381 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash -651112714, now seen corresponding path program 2 times
[2021-08-12 19:54:52,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:52,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227256399]
[2021-08-12 19:54:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:52,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:52,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227256399]
[2021-08-12 19:54:52,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227256399] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:52,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411482852]
[2021-08-12 19:54:52,682 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 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
[2021-08-12 19:54:52,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:54:52,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:54:52,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-08-12 19:54:52,717 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:53,014 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:53,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2021-08-12 19:54:53,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:53,034 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:54:53,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-08-12 19:54:53,036 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:53,047 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:54:53,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-08-12 19:54:53,049 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:53,058 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:53,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:54:53,060 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:53,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:53,149 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-08-12 19:54:53,149 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:133, output treesize:122
[2021-08-12 19:54:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:53,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411482852] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:53,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:53,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13
[2021-08-12 19:54:53,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109936065]
[2021-08-12 19:54:53,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-08-12 19:54:53,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:53,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-08-12 19:54:53,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2021-08-12 19:54:53,349 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 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)
[2021-08-12 19:54:53,823 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26
[2021-08-12 19:54:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:54,006 INFO L93 Difference]: Finished difference Result 376 states and 1079 transitions.
[2021-08-12 19:54:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-08-12 19:54:54,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 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 22
[2021-08-12 19:54:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:54,009 INFO L225 Difference]: With dead ends: 376
[2021-08-12 19:54:54,009 INFO L226 Difference]: Without dead ends: 359
[2021-08-12 19:54:54,010 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 821.3ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:54:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states.
[2021-08-12 19:54:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229.
[2021-08-12 19:54:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions.
[2021-08-12 19:54:54,027 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22
[2021-08-12 19:54:54,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:54,028 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions.
[2021-08-12 19:54:54,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 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)
[2021-08-12 19:54:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions.
[2021-08-12 19:54:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-08-12 19:54:54,030 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:54,030 INFO L550 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]
[2021-08-12 19:54:54,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-08-12 19:54:54,253 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -352339266, now seen corresponding path program 3 times
[2021-08-12 19:54:54,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:54,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712006408]
[2021-08-12 19:54:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:54,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:54,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712006408]
[2021-08-12 19:54:54,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712006408] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:54,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035874830]
[2021-08-12 19:54:54,470 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 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
[2021-08-12 19:54:54,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-08-12 19:54:54,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:54:54,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-08-12 19:54:54,522 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:54,734 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:54,735 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:54,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-08-12 19:54:54,737 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:54,749 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:54,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2021-08-12 19:54:54,752 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:54,805 INFO L628 ElimStorePlain]: treesize reduction 35, result has 56.8 percent of original size
[2021-08-12 19:54:54,808 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:54:54,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-08-12 19:54:54,811 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:54,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:54,833 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:54:54,833 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:121, output treesize:21
[2021-08-12 19:54:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:54,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035874830] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:54,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:54,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2021-08-12 19:54:54,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223001825]
[2021-08-12 19:54:54,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:54:54,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:54,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:54:54,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:54:54,885 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 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)
[2021-08-12 19:54:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:55,130 INFO L93 Difference]: Finished difference Result 298 states and 833 transitions.
[2021-08-12 19:54:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-08-12 19:54:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 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 22
[2021-08-12 19:54:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:55,134 INFO L225 Difference]: With dead ends: 298
[2021-08-12 19:54:55,134 INFO L226 Difference]: Without dead ends: 281
[2021-08-12 19:54:55,135 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 371.8ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240
[2021-08-12 19:54:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2021-08-12 19:54:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241.
[2021-08-12 19:54:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions.
[2021-08-12 19:54:55,155 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22
[2021-08-12 19:54:55,156 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:55,156 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions.
[2021-08-12 19:54:55,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 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)
[2021-08-12 19:54:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions.
[2021-08-12 19:54:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-08-12 19:54:55,160 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:55,161 INFO L550 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]
[2021-08-12 19:54:55,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2021-08-12 19:54:55,384 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1218486334, now seen corresponding path program 4 times
[2021-08-12 19:54:55,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:55,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868215414]
[2021-08-12 19:54:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:55,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:55,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868215414]
[2021-08-12 19:54:55,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868215414] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:55,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111202988]
[2021-08-12 19:54:55,610 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 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
[2021-08-12 19:54:55,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:54:55,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:54:55,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-08-12 19:54:55,643 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:55,866 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:54:55,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-08-12 19:54:55,869 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:55,878 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:55,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:54:55,880 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:55,939 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:55,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:55,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2021-08-12 19:54:55,962 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:55,973 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:54:55,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-08-12 19:54:55,975 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:54:56,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:54:56,043 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-08-12 19:54:56,043 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:98
[2021-08-12 19:54:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:56,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111202988] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:56,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:56,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:54:56,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907007734]
[2021-08-12 19:54:56,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:54:56,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:56,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:54:56,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:54:56,188 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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)
[2021-08-12 19:54:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:56,606 INFO L93 Difference]: Finished difference Result 411 states and 1187 transitions.
[2021-08-12 19:54:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-08-12 19:54:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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 22
[2021-08-12 19:54:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:56,616 INFO L225 Difference]: With dead ends: 411
[2021-08-12 19:54:56,616 INFO L226 Difference]: Without dead ends: 394
[2021-08-12 19:54:56,617 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 573.5ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2021-08-12 19:54:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states.
[2021-08-12 19:54:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 247.
[2021-08-12 19:54:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions.
[2021-08-12 19:54:56,636 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22
[2021-08-12 19:54:56,637 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:56,638 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions.
[2021-08-12 19:54:56,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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)
[2021-08-12 19:54:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions.
[2021-08-12 19:54:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:54:56,644 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:56,644 INFO L550 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]
[2021-08-12 19:54:56,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:54:56,857 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:56,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:56,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1613936552, now seen corresponding path program 5 times
[2021-08-12 19:54:56,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:56,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208356186]
[2021-08-12 19:54:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:56,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:56,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208356186]
[2021-08-12 19:54:56,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208356186] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:56,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650193476]
[2021-08-12 19:54:56,913 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 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
[2021-08-12 19:54:56,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:54:56,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:54:56,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:54:56,941 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:57,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650193476] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:57,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:57,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:54:57,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284980460]
[2021-08-12 19:54:57,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:54:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:57,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:54:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:54:57,046 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:57,571 INFO L93 Difference]: Finished difference Result 644 states and 1840 transitions.
[2021-08-12 19:54:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-08-12 19:54:57,572 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 24
[2021-08-12 19:54:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:57,575 INFO L225 Difference]: With dead ends: 644
[2021-08-12 19:54:57,575 INFO L226 Difference]: Without dead ends: 619
[2021-08-12 19:54:57,576 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 242.5ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812
[2021-08-12 19:54:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states.
[2021-08-12 19:54:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297.
[2021-08-12 19:54:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions.
[2021-08-12 19:54:57,601 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24
[2021-08-12 19:54:57,602 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:57,602 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions.
[2021-08-12 19:54:57,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions.
[2021-08-12 19:54:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:54:57,603 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:57,603 INFO L550 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]
[2021-08-12 19:54:57,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2021-08-12 19:54:57,817 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1704711900, now seen corresponding path program 6 times
[2021-08-12 19:54:57,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:57,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426045501]
[2021-08-12 19:54:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:57,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:57,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426045501]
[2021-08-12 19:54:57,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426045501] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:57,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266949185]
[2021-08-12 19:54:57,879 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 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
[2021-08-12 19:54:57,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:54:57,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:54:57,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:54:57,922 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:58,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266949185] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:58,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:58,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:54:58,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588124810]
[2021-08-12 19:54:58,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:54:58,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:58,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:54:58,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:54:58,040 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:54:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:54:59,045 INFO L93 Difference]: Finished difference Result 1103 states and 3056 transitions.
[2021-08-12 19:54:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-08-12 19:54:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24
[2021-08-12 19:54:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:54:59,052 INFO L225 Difference]: With dead ends: 1103
[2021-08-12 19:54:59,052 INFO L226 Difference]: Without dead ends: 1078
[2021-08-12 19:54:59,053 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 510.9ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550
[2021-08-12 19:54:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states.
[2021-08-12 19:54:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302.
[2021-08-12 19:54:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:54:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions.
[2021-08-12 19:54:59,085 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24
[2021-08-12 19:54:59,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:54:59,085 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions.
[2021-08-12 19:54:59,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:54:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions.
[2021-08-12 19:54:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:54:59,086 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:54:59,086 INFO L550 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]
[2021-08-12 19:54:59,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:54:59,311 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:54:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:54:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2023303316, now seen corresponding path program 7 times
[2021-08-12 19:54:59,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:54:59,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823366504]
[2021-08-12 19:54:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:54:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:59,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:54:59,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823366504]
[2021-08-12 19:54:59,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823366504] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:59,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212263497]
[2021-08-12 19:54:59,359 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 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
[2021-08-12 19:54:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:54:59,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:54:59,386 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:54:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:54:59,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212263497] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:54:59,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:54:59,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:54:59,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386367903]
[2021-08-12 19:54:59,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:54:59,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:54:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:54:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:54:59,489 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:00,380 INFO L93 Difference]: Finished difference Result 976 states and 2754 transitions.
[2021-08-12 19:55:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-08-12 19:55:00,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24
[2021-08-12 19:55:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:00,387 INFO L225 Difference]: With dead ends: 976
[2021-08-12 19:55:00,387 INFO L226 Difference]: Without dead ends: 951
[2021-08-12 19:55:00,388 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 449.8ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256
[2021-08-12 19:55:00,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states.
[2021-08-12 19:55:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293.
[2021-08-12 19:55:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions.
[2021-08-12 19:55:00,419 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24
[2021-08-12 19:55:00,419 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:00,419 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions.
[2021-08-12 19:55:00,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions.
[2021-08-12 19:55:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:00,421 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:00,421 INFO L550 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]
[2021-08-12 19:55:00,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:00,644 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1087164644, now seen corresponding path program 1 times
[2021-08-12 19:55:00,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:00,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638686375]
[2021-08-12 19:55:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:00,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:00,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638686375]
[2021-08-12 19:55:00,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638686375] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:00,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717265229]
[2021-08-12 19:55:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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
[2021-08-12 19:55:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:00,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-08-12 19:55:00,717 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:00,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717265229] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:00,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:00,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-08-12 19:55:00,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059077690]
[2021-08-12 19:55:00,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-08-12 19:55:00,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:00,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-08-12 19:55:00,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-08-12 19:55:00,781 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:01,030 INFO L93 Difference]: Finished difference Result 745 states and 2187 transitions.
[2021-08-12 19:55:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-08-12 19:55:01,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:01,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:01,035 INFO L225 Difference]: With dead ends: 745
[2021-08-12 19:55:01,035 INFO L226 Difference]: Without dead ends: 663
[2021-08-12 19:55:01,035 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states.
[2021-08-12 19:55:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413.
[2021-08-12 19:55:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions.
[2021-08-12 19:55:01,075 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24
[2021-08-12 19:55:01,076 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:01,076 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions.
[2021-08-12 19:55:01,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions.
[2021-08-12 19:55:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:01,077 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:01,077 INFO L550 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]
[2021-08-12 19:55:01,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2021-08-12 19:55:01,288 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1524133352, now seen corresponding path program 8 times
[2021-08-12 19:55:01,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:01,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511320954]
[2021-08-12 19:55:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:01,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:01,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511320954]
[2021-08-12 19:55:01,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511320954] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:01,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703523547]
[2021-08-12 19:55:01,349 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 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
[2021-08-12 19:55:01,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:01,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:01,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:01,396 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:01,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703523547] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:01,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:01,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-08-12 19:55:01,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207545297]
[2021-08-12 19:55:01,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:01,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:01,488 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:01,817 INFO L93 Difference]: Finished difference Result 765 states and 2274 transitions.
[2021-08-12 19:55:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-08-12 19:55:01,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:01,823 INFO L225 Difference]: With dead ends: 765
[2021-08-12 19:55:01,823 INFO L226 Difference]: Without dead ends: 672
[2021-08-12 19:55:01,824 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462
[2021-08-12 19:55:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states.
[2021-08-12 19:55:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515.
[2021-08-12 19:55:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions.
[2021-08-12 19:55:01,874 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24
[2021-08-12 19:55:01,874 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:01,875 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions.
[2021-08-12 19:55:01,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions.
[2021-08-12 19:55:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:01,876 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:01,876 INFO L550 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]
[2021-08-12 19:55:02,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:02,079 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2064876612, now seen corresponding path program 2 times
[2021-08-12 19:55:02,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:02,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762140473]
[2021-08-12 19:55:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:02,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:02,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762140473]
[2021-08-12 19:55:02,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762140473] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:02,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223756195]
[2021-08-12 19:55:02,130 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 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
[2021-08-12 19:55:02,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:02,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:02,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-08-12 19:55:02,169 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:02,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223756195] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:02,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:02,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-08-12 19:55:02,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350682642]
[2021-08-12 19:55:02,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-08-12 19:55:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-08-12 19:55:02,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-08-12 19:55:02,223 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:02,549 INFO L93 Difference]: Finished difference Result 966 states and 2852 transitions.
[2021-08-12 19:55:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-08-12 19:55:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:02,557 INFO L225 Difference]: With dead ends: 966
[2021-08-12 19:55:02,558 INFO L226 Difference]: Without dead ends: 830
[2021-08-12 19:55:02,558 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states.
[2021-08-12 19:55:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530.
[2021-08-12 19:55:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions.
[2021-08-12 19:55:02,618 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24
[2021-08-12 19:55:02,618 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:02,618 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions.
[2021-08-12 19:55:02,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions.
[2021-08-12 19:55:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:02,620 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:02,621 INFO L550 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]
[2021-08-12 19:55:02,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:02,836 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:02,836 INFO L82 PathProgramCache]: Analyzing trace with hash 718195046, now seen corresponding path program 9 times
[2021-08-12 19:55:02,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:02,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081166480]
[2021-08-12 19:55:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:02,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:02,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081166480]
[2021-08-12 19:55:02,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081166480] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:02,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21185303]
[2021-08-12 19:55:02,879 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 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
[2021-08-12 19:55:02,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:55:02,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:02,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:02,910 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:02,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21185303] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:02,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:02,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:55:02,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079004213]
[2021-08-12 19:55:02,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-08-12 19:55:02,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-08-12 19:55:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-08-12 19:55:02,981 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:03,551 INFO L93 Difference]: Finished difference Result 1221 states and 3556 transitions.
[2021-08-12 19:55:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-08-12 19:55:03,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:03,559 INFO L225 Difference]: With dead ends: 1221
[2021-08-12 19:55:03,559 INFO L226 Difference]: Without dead ends: 1196
[2021-08-12 19:55:03,560 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 176.7ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600
[2021-08-12 19:55:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states.
[2021-08-12 19:55:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542.
[2021-08-12 19:55:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions.
[2021-08-12 19:55:03,643 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24
[2021-08-12 19:55:03,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:03,643 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions.
[2021-08-12 19:55:03,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions.
[2021-08-12 19:55:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:03,645 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:03,645 INFO L550 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]
[2021-08-12 19:55:03,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2021-08-12 19:55:03,846 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:03,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:03,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1503109140, now seen corresponding path program 10 times
[2021-08-12 19:55:03,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:03,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226791546]
[2021-08-12 19:55:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:03,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:03,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226791546]
[2021-08-12 19:55:03,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226791546] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:03,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575810241]
[2021-08-12 19:55:03,887 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 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
[2021-08-12 19:55:03,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:55:03,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:03,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:03,915 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:03,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575810241] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:03,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:03,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:55:04,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535970598]
[2021-08-12 19:55:04,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-08-12 19:55:04,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:04,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-08-12 19:55:04,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-08-12 19:55:04,001 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:04,807 INFO L93 Difference]: Finished difference Result 1517 states and 4304 transitions.
[2021-08-12 19:55:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2021-08-12 19:55:04,813 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:04,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:04,822 INFO L225 Difference]: With dead ends: 1517
[2021-08-12 19:55:04,823 INFO L226 Difference]: Without dead ends: 1492
[2021-08-12 19:55:04,824 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 273.3ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260
[2021-08-12 19:55:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states.
[2021-08-12 19:55:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586.
[2021-08-12 19:55:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions.
[2021-08-12 19:55:04,896 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24
[2021-08-12 19:55:04,896 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:04,896 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions.
[2021-08-12 19:55:04,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions.
[2021-08-12 19:55:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:04,898 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:04,898 INFO L550 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]
[2021-08-12 19:55:05,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2021-08-12 19:55:05,113 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:05,114 INFO L82 PathProgramCache]: Analyzing trace with hash 420086484, now seen corresponding path program 11 times
[2021-08-12 19:55:05,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:05,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411341900]
[2021-08-12 19:55:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:05,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:05,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411341900]
[2021-08-12 19:55:05,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411341900] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:05,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922825948]
[2021-08-12 19:55:05,154 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 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
[2021-08-12 19:55:05,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:05,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:05,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:05,202 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:05,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922825948] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:05,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:05,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-08-12 19:55:05,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349171096]
[2021-08-12 19:55:05,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:05,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:05,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:05,281 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:05,818 INFO L93 Difference]: Finished difference Result 1363 states and 4072 transitions.
[2021-08-12 19:55:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-08-12 19:55:05,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:05,826 INFO L225 Difference]: With dead ends: 1363
[2021-08-12 19:55:05,826 INFO L226 Difference]: Without dead ends: 1248
[2021-08-12 19:55:05,827 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600
[2021-08-12 19:55:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states.
[2021-08-12 19:55:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758.
[2021-08-12 19:55:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions.
[2021-08-12 19:55:05,915 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24
[2021-08-12 19:55:05,915 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:05,915 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions.
[2021-08-12 19:55:05,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions.
[2021-08-12 19:55:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:05,918 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:05,918 INFO L550 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]
[2021-08-12 19:55:06,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60
[2021-08-12 19:55:06,141 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:06,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:06,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1891164602, now seen corresponding path program 12 times
[2021-08-12 19:55:06,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:06,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354585733]
[2021-08-12 19:55:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:06,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:06,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354585733]
[2021-08-12 19:55:06,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354585733] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:06,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425943500]
[2021-08-12 19:55:06,185 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 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
[2021-08-12 19:55:06,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:55:06,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:06,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:06,215 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:06,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425943500] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:06,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:06,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-08-12 19:55:06,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841924821]
[2021-08-12 19:55:06,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:06,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:06,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:06,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:06,308 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:06,890 INFO L93 Difference]: Finished difference Result 1408 states and 4261 transitions.
[2021-08-12 19:55:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-08-12 19:55:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:06,897 INFO L225 Difference]: With dead ends: 1408
[2021-08-12 19:55:06,898 INFO L226 Difference]: Without dead ends: 1329
[2021-08-12 19:55:06,899 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 198.7ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702
[2021-08-12 19:55:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states.
[2021-08-12 19:55:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764.
[2021-08-12 19:55:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:07,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions.
[2021-08-12 19:55:07,014 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24
[2021-08-12 19:55:07,014 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:07,014 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions.
[2021-08-12 19:55:07,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions.
[2021-08-12 19:55:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:07,017 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:07,017 INFO L550 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]
[2021-08-12 19:55:07,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:07,233 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:07,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:07,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1458287998, now seen corresponding path program 13 times
[2021-08-12 19:55:07,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:07,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263243677]
[2021-08-12 19:55:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:07,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:07,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263243677]
[2021-08-12 19:55:07,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263243677] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:07,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237821147]
[2021-08-12 19:55:07,329 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 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
[2021-08-12 19:55:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:07,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:07,367 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:07,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237821147] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:07,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:07,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:55:07,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221136770]
[2021-08-12 19:55:07,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-08-12 19:55:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-08-12 19:55:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-08-12 19:55:07,471 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:08,288 INFO L93 Difference]: Finished difference Result 1573 states and 4696 transitions.
[2021-08-12 19:55:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-08-12 19:55:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:08,295 INFO L225 Difference]: With dead ends: 1573
[2021-08-12 19:55:08,296 INFO L226 Difference]: Without dead ends: 1544
[2021-08-12 19:55:08,297 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 249.7ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930
[2021-08-12 19:55:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states.
[2021-08-12 19:55:08,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772.
[2021-08-12 19:55:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions.
[2021-08-12 19:55:08,393 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24
[2021-08-12 19:55:08,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:08,393 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions.
[2021-08-12 19:55:08,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions.
[2021-08-12 19:55:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:08,396 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:08,396 INFO L550 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]
[2021-08-12 19:55:08,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:08,609 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:08,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1186278808, now seen corresponding path program 14 times
[2021-08-12 19:55:08,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:08,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966744149]
[2021-08-12 19:55:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:08,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:08,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966744149]
[2021-08-12 19:55:08,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966744149] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:08,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934352154]
[2021-08-12 19:55:08,647 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 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
[2021-08-12 19:55:08,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:08,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:08,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:08,696 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:08,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934352154] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:08,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:08,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:08,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135494780]
[2021-08-12 19:55:08,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:08,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:08,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:08,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:08,782 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:10,191 INFO L93 Difference]: Finished difference Result 2759 states and 8237 transitions.
[2021-08-12 19:55:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-08-12 19:55:10,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24
[2021-08-12 19:55:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:10,207 INFO L225 Difference]: With dead ends: 2759
[2021-08-12 19:55:10,207 INFO L226 Difference]: Without dead ends: 2734
[2021-08-12 19:55:10,209 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 439.4ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550
[2021-08-12 19:55:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states.
[2021-08-12 19:55:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841.
[2021-08-12 19:55:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions.
[2021-08-12 19:55:10,308 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24
[2021-08-12 19:55:10,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:10,308 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions.
[2021-08-12 19:55:10,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions.
[2021-08-12 19:55:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:10,311 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:10,311 INFO L550 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]
[2021-08-12 19:55:10,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:10,525 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:10,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1753230888, now seen corresponding path program 15 times
[2021-08-12 19:55:10,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:10,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103853187]
[2021-08-12 19:55:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:10,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:10,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103853187]
[2021-08-12 19:55:10,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103853187] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:10,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129160678]
[2021-08-12 19:55:10,580 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 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
[2021-08-12 19:55:10,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:55:10,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:10,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:10,609 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:10,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129160678] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:10,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:10,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:10,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796914493]
[2021-08-12 19:55:10,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:10,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:10,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:10,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:10,730 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:12,276 INFO L93 Difference]: Finished difference Result 2718 states and 8127 transitions.
[2021-08-12 19:55:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-08-12 19:55:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24
[2021-08-12 19:55:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:12,287 INFO L225 Difference]: With dead ends: 2718
[2021-08-12 19:55:12,287 INFO L226 Difference]: Without dead ends: 2693
[2021-08-12 19:55:12,289 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 460.4ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550
[2021-08-12 19:55:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states.
[2021-08-12 19:55:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831.
[2021-08-12 19:55:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions.
[2021-08-12 19:55:12,416 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24
[2021-08-12 19:55:12,416 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:12,416 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions.
[2021-08-12 19:55:12,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions.
[2021-08-12 19:55:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:12,418 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:12,418 INFO L550 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]
[2021-08-12 19:55:12,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64
[2021-08-12 19:55:12,633 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash 580885030, now seen corresponding path program 16 times
[2021-08-12 19:55:12,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:12,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645446900]
[2021-08-12 19:55:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:12,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:12,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645446900]
[2021-08-12 19:55:12,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645446900] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:12,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663456811]
[2021-08-12 19:55:12,673 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 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
[2021-08-12 19:55:12,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:55:12,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:12,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:12,716 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:12,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663456811] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:12,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:12,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:55:12,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493189045]
[2021-08-12 19:55:12,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:55:12,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:12,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:55:12,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:55:12,788 INFO L87 Difference]: Start difference. First operand 831 states and 2730 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:14,243 INFO L93 Difference]: Finished difference Result 2702 states and 7881 transitions.
[2021-08-12 19:55:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-08-12 19:55:14,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:14,251 INFO L225 Difference]: With dead ends: 2702
[2021-08-12 19:55:14,251 INFO L226 Difference]: Without dead ends: 2677
[2021-08-12 19:55:14,252 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 385.3ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162
[2021-08-12 19:55:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states.
[2021-08-12 19:55:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845.
[2021-08-12 19:55:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions.
[2021-08-12 19:55:14,371 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24
[2021-08-12 19:55:14,371 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:14,372 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions.
[2021-08-12 19:55:14,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions.
[2021-08-12 19:55:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:14,374 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:14,374 INFO L550 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]
[2021-08-12 19:55:14,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2021-08-12 19:55:14,590 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:14,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:14,591 INFO L82 PathProgramCache]: Analyzing trace with hash 662261118, now seen corresponding path program 17 times
[2021-08-12 19:55:14,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:14,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129527873]
[2021-08-12 19:55:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:14,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:14,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129527873]
[2021-08-12 19:55:14,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129527873] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:14,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784122879]
[2021-08-12 19:55:14,638 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 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
[2021-08-12 19:55:14,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-08-12 19:55:14,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:14,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:14,672 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:14,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784122879] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:14,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:14,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:55:14,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725592947]
[2021-08-12 19:55:14,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:55:14,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:55:14,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:55:14,742 INFO L87 Difference]: Start difference. First operand 845 states and 2785 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:16,205 INFO L93 Difference]: Finished difference Result 2499 states and 7378 transitions.
[2021-08-12 19:55:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-08-12 19:55:16,205 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:16,211 INFO L225 Difference]: With dead ends: 2499
[2021-08-12 19:55:16,211 INFO L226 Difference]: Without dead ends: 2470
[2021-08-12 19:55:16,212 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 352.1ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892
[2021-08-12 19:55:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states.
[2021-08-12 19:55:16,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845.
[2021-08-12 19:55:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions.
[2021-08-12 19:55:16,345 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24
[2021-08-12 19:55:16,345 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:16,345 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions.
[2021-08-12 19:55:16,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions.
[2021-08-12 19:55:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:16,347 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:16,347 INFO L550 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]
[2021-08-12 19:55:16,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2021-08-12 19:55:16,561 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:16,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:16,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1592918334, now seen corresponding path program 18 times
[2021-08-12 19:55:16,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:16,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058281465]
[2021-08-12 19:55:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:16,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:16,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058281465]
[2021-08-12 19:55:16,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058281465] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:16,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642375294]
[2021-08-12 19:55:16,602 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 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
[2021-08-12 19:55:16,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-08-12 19:55:16,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:16,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:16,643 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:16,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642375294] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:16,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:16,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:16,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722317908]
[2021-08-12 19:55:16,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:16,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:16,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:16,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:16,733 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:18,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:18,421 INFO L93 Difference]: Finished difference Result 2539 states and 7492 transitions.
[2021-08-12 19:55:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-08-12 19:55:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:18,429 INFO L225 Difference]: With dead ends: 2539
[2021-08-12 19:55:18,429 INFO L226 Difference]: Without dead ends: 2514
[2021-08-12 19:55:18,430 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 396.6ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070
[2021-08-12 19:55:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states.
[2021-08-12 19:55:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853.
[2021-08-12 19:55:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions.
[2021-08-12 19:55:18,571 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24
[2021-08-12 19:55:18,572 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:18,572 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions.
[2021-08-12 19:55:18,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions.
[2021-08-12 19:55:18,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:18,574 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:18,574 INFO L550 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]
[2021-08-12 19:55:18,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2021-08-12 19:55:18,788 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:18,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1059009808, now seen corresponding path program 19 times
[2021-08-12 19:55:18,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:18,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183291775]
[2021-08-12 19:55:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:18,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:18,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183291775]
[2021-08-12 19:55:18,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183291775] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:18,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378786290]
[2021-08-12 19:55:18,837 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 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
[2021-08-12 19:55:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:18,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:18,863 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:18,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378786290] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:18,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:18,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:18,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514128069]
[2021-08-12 19:55:18,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:18,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:18,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:18,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:18,938 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:20,556 INFO L93 Difference]: Finished difference Result 2357 states and 7054 transitions.
[2021-08-12 19:55:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-08-12 19:55:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:20,563 INFO L225 Difference]: With dead ends: 2357
[2021-08-12 19:55:20,564 INFO L226 Difference]: Without dead ends: 2328
[2021-08-12 19:55:20,565 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 379.0ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892
[2021-08-12 19:55:20,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states.
[2021-08-12 19:55:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853.
[2021-08-12 19:55:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions.
[2021-08-12 19:55:20,705 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24
[2021-08-12 19:55:20,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:20,706 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions.
[2021-08-12 19:55:20,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions.
[2021-08-12 19:55:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:20,708 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:20,708 INFO L550 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]
[2021-08-12 19:55:20,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2021-08-12 19:55:20,933 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1971295360, now seen corresponding path program 3 times
[2021-08-12 19:55:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:20,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418200949]
[2021-08-12 19:55:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:20,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:20,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418200949]
[2021-08-12 19:55:20,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418200949] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:20,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464825057]
[2021-08-12 19:55:20,967 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 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
[2021-08-12 19:55:20,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-08-12 19:55:20,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:20,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-08-12 19:55:20,999 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:21,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464825057] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:21,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:21,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-08-12 19:55:21,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284602944]
[2021-08-12 19:55:21,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-08-12 19:55:21,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:21,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-08-12 19:55:21,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-08-12 19:55:21,050 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:21,436 INFO L93 Difference]: Finished difference Result 1005 states and 3240 transitions.
[2021-08-12 19:55:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-08-12 19:55:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:21,439 INFO L225 Difference]: With dead ends: 1005
[2021-08-12 19:55:21,440 INFO L226 Difference]: Without dead ends: 929
[2021-08-12 19:55:21,440 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:55:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states.
[2021-08-12 19:55:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780.
[2021-08-12 19:55:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions.
[2021-08-12 19:55:21,570 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24
[2021-08-12 19:55:21,570 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:21,570 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions.
[2021-08-12 19:55:21,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions.
[2021-08-12 19:55:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:21,572 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:21,572 INFO L550 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]
[2021-08-12 19:55:21,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:21,774 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:21,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1041095616, now seen corresponding path program 20 times
[2021-08-12 19:55:21,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:21,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425729963]
[2021-08-12 19:55:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:21,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:21,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425729963]
[2021-08-12 19:55:21,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425729963] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:21,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673722199]
[2021-08-12 19:55:21,824 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 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
[2021-08-12 19:55:21,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:21,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:21,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:21,862 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:21,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673722199] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:21,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:21,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-08-12 19:55:21,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313978997]
[2021-08-12 19:55:21,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-08-12 19:55:21,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:21,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-08-12 19:55:21,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-08-12 19:55:21,919 INFO L87 Difference]: Start difference. First operand 780 states and 2573 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)
[2021-08-12 19:55:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:22,884 INFO L93 Difference]: Finished difference Result 1580 states and 4827 transitions.
[2021-08-12 19:55:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-08-12 19:55:22,885 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 24
[2021-08-12 19:55:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:22,889 INFO L225 Difference]: With dead ends: 1580
[2021-08-12 19:55:22,889 INFO L226 Difference]: Without dead ends: 1555
[2021-08-12 19:55:22,890 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 196.0ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702
[2021-08-12 19:55:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states.
[2021-08-12 19:55:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842.
[2021-08-12 19:55:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions.
[2021-08-12 19:55:23,018 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24
[2021-08-12 19:55:23,019 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:23,019 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions.
[2021-08-12 19:55:23,019 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)
[2021-08-12 19:55:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions.
[2021-08-12 19:55:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:23,020 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:23,020 INFO L550 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]
[2021-08-12 19:55:23,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:23,221 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash 861583836, now seen corresponding path program 21 times
[2021-08-12 19:55:23,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:23,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254822665]
[2021-08-12 19:55:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:23,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:23,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254822665]
[2021-08-12 19:55:23,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254822665] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:23,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001518872]
[2021-08-12 19:55:23,273 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 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
[2021-08-12 19:55:23,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:55:23,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:23,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:23,299 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:23,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001518872] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:23,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:23,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2021-08-12 19:55:23,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206993620]
[2021-08-12 19:55:23,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-08-12 19:55:23,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-08-12 19:55:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-08-12 19:55:23,371 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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)
[2021-08-12 19:55:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:24,311 INFO L93 Difference]: Finished difference Result 1630 states and 4954 transitions.
[2021-08-12 19:55:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2021-08-12 19:55:24,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 24
[2021-08-12 19:55:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:24,314 INFO L225 Difference]: With dead ends: 1630
[2021-08-12 19:55:24,314 INFO L226 Difference]: Without dead ends: 1605
[2021-08-12 19:55:24,315 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 173.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600
[2021-08-12 19:55:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states.
[2021-08-12 19:55:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896.
[2021-08-12 19:55:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions.
[2021-08-12 19:55:24,436 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24
[2021-08-12 19:55:24,436 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:24,436 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions.
[2021-08-12 19:55:24,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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)
[2021-08-12 19:55:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions.
[2021-08-12 19:55:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:24,437 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:24,437 INFO L550 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]
[2021-08-12 19:55:24,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:24,638 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:24,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:24,638 INFO L82 PathProgramCache]: Analyzing trace with hash 816762694, now seen corresponding path program 22 times
[2021-08-12 19:55:24,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:24,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590286145]
[2021-08-12 19:55:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:24,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:24,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590286145]
[2021-08-12 19:55:24,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590286145] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:24,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461618153]
[2021-08-12 19:55:24,666 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 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
[2021-08-12 19:55:24,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:55:24,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:24,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:24,690 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-08-12 19:55:24,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461618153] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:24,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:24,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2021-08-12 19:55:24,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42739784]
[2021-08-12 19:55:24,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-08-12 19:55:24,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:24,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-08-12 19:55:24,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-08-12 19:55:24,753 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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)
[2021-08-12 19:55:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:25,537 INFO L93 Difference]: Finished difference Result 1549 states and 4744 transitions.
[2021-08-12 19:55:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-08-12 19:55:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 24
[2021-08-12 19:55:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:25,541 INFO L225 Difference]: With dead ends: 1549
[2021-08-12 19:55:25,541 INFO L226 Difference]: Without dead ends: 1520
[2021-08-12 19:55:25,541 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420
[2021-08-12 19:55:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states.
[2021-08-12 19:55:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896.
[2021-08-12 19:55:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions.
[2021-08-12 19:55:25,647 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24
[2021-08-12 19:55:25,647 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:25,647 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions.
[2021-08-12 19:55:25,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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)
[2021-08-12 19:55:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions.
[2021-08-12 19:55:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:25,649 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:25,649 INFO L550 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]
[2021-08-12 19:55:25,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72
[2021-08-12 19:55:25,849 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1414099352, now seen corresponding path program 23 times
[2021-08-12 19:55:25,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:25,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834772138]
[2021-08-12 19:55:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:25,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:25,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834772138]
[2021-08-12 19:55:25,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834772138] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:25,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932806076]
[2021-08-12 19:55:25,885 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 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
[2021-08-12 19:55:25,921 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:55:25,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:25,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:25,923 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:25,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932806076] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:25,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:25,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-08-12 19:55:25,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875560446]
[2021-08-12 19:55:25,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-08-12 19:55:25,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:25,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-08-12 19:55:25,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-08-12 19:55:25,979 INFO L87 Difference]: Start difference. First operand 896 states and 2943 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)
[2021-08-12 19:55:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:26,809 INFO L93 Difference]: Finished difference Result 1533 states and 4706 transitions.
[2021-08-12 19:55:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:55:26,809 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 24
[2021-08-12 19:55:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:26,813 INFO L225 Difference]: With dead ends: 1533
[2021-08-12 19:55:26,813 INFO L226 Difference]: Without dead ends: 1496
[2021-08-12 19:55:26,813 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552
[2021-08-12 19:55:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states.
[2021-08-12 19:55:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904.
[2021-08-12 19:55:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions.
[2021-08-12 19:55:26,920 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24
[2021-08-12 19:55:26,920 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:26,920 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions.
[2021-08-12 19:55:26,920 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)
[2021-08-12 19:55:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions.
[2021-08-12 19:55:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:26,921 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:26,921 INFO L550 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]
[2021-08-12 19:55:27,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:27,122 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:27,122 INFO L82 PathProgramCache]: Analyzing trace with hash 887679068, now seen corresponding path program 24 times
[2021-08-12 19:55:27,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:27,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755290605]
[2021-08-12 19:55:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:27,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:27,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755290605]
[2021-08-12 19:55:27,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755290605] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:27,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563442458]
[2021-08-12 19:55:27,176 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 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
[2021-08-12 19:55:27,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:55:27,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:27,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:27,208 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:27,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563442458] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:27,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:27,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:27,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93470360]
[2021-08-12 19:55:27,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:27,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:27,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:27,285 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:28,905 INFO L93 Difference]: Finished difference Result 2437 states and 7628 transitions.
[2021-08-12 19:55:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-08-12 19:55:28,905 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24
[2021-08-12 19:55:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:28,909 INFO L225 Difference]: With dead ends: 2437
[2021-08-12 19:55:28,909 INFO L226 Difference]: Without dead ends: 2412
[2021-08-12 19:55:28,910 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 340.8ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482
[2021-08-12 19:55:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states.
[2021-08-12 19:55:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960.
[2021-08-12 19:55:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions.
[2021-08-12 19:55:29,025 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24
[2021-08-12 19:55:29,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:29,026 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions.
[2021-08-12 19:55:29,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions.
[2021-08-12 19:55:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:29,027 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:29,027 INFO L550 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]
[2021-08-12 19:55:29,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2021-08-12 19:55:29,229 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:29,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1454631148, now seen corresponding path program 25 times
[2021-08-12 19:55:29,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:29,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217295237]
[2021-08-12 19:55:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:29,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:29,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217295237]
[2021-08-12 19:55:29,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217295237] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:29,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904982994]
[2021-08-12 19:55:29,268 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 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
[2021-08-12 19:55:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:29,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:29,315 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:29,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904982994] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:29,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:29,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:29,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699380447]
[2021-08-12 19:55:29,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:29,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:29,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:29,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:29,401 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:30,885 INFO L93 Difference]: Finished difference Result 2360 states and 7430 transitions.
[2021-08-12 19:55:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-08-12 19:55:30,886 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 24
[2021-08-12 19:55:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:30,890 INFO L225 Difference]: With dead ends: 2360
[2021-08-12 19:55:30,890 INFO L226 Difference]: Without dead ends: 2335
[2021-08-12 19:55:30,891 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 326.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482
[2021-08-12 19:55:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states.
[2021-08-12 19:55:31,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957.
[2021-08-12 19:55:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions.
[2021-08-12 19:55:31,020 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24
[2021-08-12 19:55:31,021 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:31,021 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions.
[2021-08-12 19:55:31,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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)
[2021-08-12 19:55:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions.
[2021-08-12 19:55:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:31,023 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:31,023 INFO L550 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]
[2021-08-12 19:55:31,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:31,224 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:31,225 INFO L82 PathProgramCache]: Analyzing trace with hash 282285290, now seen corresponding path program 26 times
[2021-08-12 19:55:31,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:31,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144327857]
[2021-08-12 19:55:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:31,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:31,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144327857]
[2021-08-12 19:55:31,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144327857] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:31,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547202340]
[2021-08-12 19:55:31,268 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 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
[2021-08-12 19:55:31,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:31,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:31,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:31,295 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:31,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547202340] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:31,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:31,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:55:31,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15412959]
[2021-08-12 19:55:31,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:55:31,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:31,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:55:31,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:55:31,372 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:32,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:32,886 INFO L93 Difference]: Finished difference Result 2310 states and 7184 transitions.
[2021-08-12 19:55:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2021-08-12 19:55:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:32,890 INFO L225 Difference]: With dead ends: 2310
[2021-08-12 19:55:32,890 INFO L226 Difference]: Without dead ends: 2285
[2021-08-12 19:55:32,891 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 268.2ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190
[2021-08-12 19:55:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states.
[2021-08-12 19:55:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963.
[2021-08-12 19:55:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions.
[2021-08-12 19:55:33,027 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24
[2021-08-12 19:55:33,027 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:33,027 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions.
[2021-08-12 19:55:33,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions.
[2021-08-12 19:55:33,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:33,029 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:33,029 INFO L550 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]
[2021-08-12 19:55:33,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76
[2021-08-12 19:55:33,230 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:33,230 INFO L82 PathProgramCache]: Analyzing trace with hash 363661378, now seen corresponding path program 27 times
[2021-08-12 19:55:33,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:33,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895574681]
[2021-08-12 19:55:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:33,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:33,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895574681]
[2021-08-12 19:55:33,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895574681] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:33,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706938636]
[2021-08-12 19:55:33,271 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 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
[2021-08-12 19:55:33,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:55:33,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:33,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:33,297 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:33,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706938636] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:33,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:33,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:55:33,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710081347]
[2021-08-12 19:55:33,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:55:33,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:55:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:55:33,359 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:34,725 INFO L93 Difference]: Finished difference Result 2201 states and 6903 transitions.
[2021-08-12 19:55:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-08-12 19:55:34,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:34,729 INFO L225 Difference]: With dead ends: 2201
[2021-08-12 19:55:34,730 INFO L226 Difference]: Without dead ends: 2172
[2021-08-12 19:55:34,730 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 221.5ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930
[2021-08-12 19:55:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states.
[2021-08-12 19:55:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957.
[2021-08-12 19:55:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions.
[2021-08-12 19:55:34,856 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24
[2021-08-12 19:55:34,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:34,857 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions.
[2021-08-12 19:55:34,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions.
[2021-08-12 19:55:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:34,859 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:34,859 INFO L550 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]
[2021-08-12 19:55:35,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:35,073 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1294318594, now seen corresponding path program 28 times
[2021-08-12 19:55:35,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:35,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890647569]
[2021-08-12 19:55:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:35,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:35,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890647569]
[2021-08-12 19:55:35,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890647569] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:35,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594327351]
[2021-08-12 19:55:35,117 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 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
[2021-08-12 19:55:35,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:55:35,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:35,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594327351] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:35,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:35,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:35,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165987625]
[2021-08-12 19:55:35,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:35,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:35,244 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:36,664 INFO L93 Difference]: Finished difference Result 2224 states and 6951 transitions.
[2021-08-12 19:55:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-08-12 19:55:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:36,669 INFO L225 Difference]: With dead ends: 2224
[2021-08-12 19:55:36,669 INFO L226 Difference]: Without dead ends: 2199
[2021-08-12 19:55:36,670 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 264.6ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056
[2021-08-12 19:55:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states.
[2021-08-12 19:55:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963.
[2021-08-12 19:55:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions.
[2021-08-12 19:55:36,815 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24
[2021-08-12 19:55:36,815 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:36,815 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions.
[2021-08-12 19:55:36,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions.
[2021-08-12 19:55:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:36,817 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:36,817 INFO L550 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]
[2021-08-12 19:55:37,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2021-08-12 19:55:37,018 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:37,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:37,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1357609548, now seen corresponding path program 29 times
[2021-08-12 19:55:37,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:37,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24575602]
[2021-08-12 19:55:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:37,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:37,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24575602]
[2021-08-12 19:55:37,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24575602] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:37,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095612891]
[2021-08-12 19:55:37,070 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 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
[2021-08-12 19:55:37,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:55:37,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:37,094 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:37,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095612891] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:37,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:37,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:37,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623502405]
[2021-08-12 19:55:37,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:37,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:37,174 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:38,658 INFO L93 Difference]: Finished difference Result 2181 states and 6845 transitions.
[2021-08-12 19:55:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-08-12 19:55:38,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:38,663 INFO L225 Difference]: With dead ends: 2181
[2021-08-12 19:55:38,663 INFO L226 Difference]: Without dead ends: 2152
[2021-08-12 19:55:38,663 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 253.4ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870
[2021-08-12 19:55:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states.
[2021-08-12 19:55:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957.
[2021-08-12 19:55:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions.
[2021-08-12 19:55:38,826 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24
[2021-08-12 19:55:38,826 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:38,826 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions.
[2021-08-12 19:55:38,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions.
[2021-08-12 19:55:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:38,827 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:38,828 INFO L550 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]
[2021-08-12 19:55:39,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2021-08-12 19:55:39,028 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:39,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash -354181564, now seen corresponding path program 30 times
[2021-08-12 19:55:39,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:39,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617334571]
[2021-08-12 19:55:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:39,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:39,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617334571]
[2021-08-12 19:55:39,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617334571] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:39,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630963769]
[2021-08-12 19:55:39,065 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:39,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:55:39,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:39,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:39,105 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:39,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630963769] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:39,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:39,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:55:39,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886644468]
[2021-08-12 19:55:39,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-08-12 19:55:39,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:39,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-08-12 19:55:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-08-12 19:55:39,169 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:40,584 INFO L93 Difference]: Finished difference Result 2122 states and 6453 transitions.
[2021-08-12 19:55:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-08-12 19:55:40,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:40,589 INFO L225 Difference]: With dead ends: 2122
[2021-08-12 19:55:40,589 INFO L226 Difference]: Without dead ends: 2097
[2021-08-12 19:55:40,589 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 216.0ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056
[2021-08-12 19:55:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states.
[2021-08-12 19:55:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047.
[2021-08-12 19:55:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions.
[2021-08-12 19:55:40,737 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24
[2021-08-12 19:55:40,737 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:40,737 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions.
[2021-08-12 19:55:40,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:40,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions.
[2021-08-12 19:55:40,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:40,739 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:40,739 INFO L550 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]
[2021-08-12 19:55:40,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:40,939 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash -272805476, now seen corresponding path program 31 times
[2021-08-12 19:55:40,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:40,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963501789]
[2021-08-12 19:55:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:40,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:40,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963501789]
[2021-08-12 19:55:40,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963501789] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:40,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543454304]
[2021-08-12 19:55:40,992 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 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
[2021-08-12 19:55:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:41,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:41,022 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:41,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543454304] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:41,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:41,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:55:41,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696967119]
[2021-08-12 19:55:41,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-08-12 19:55:41,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:41,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-08-12 19:55:41,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-08-12 19:55:41,082 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:42,367 INFO L93 Difference]: Finished difference Result 1988 states and 6105 transitions.
[2021-08-12 19:55:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-08-12 19:55:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:42,372 INFO L225 Difference]: With dead ends: 1988
[2021-08-12 19:55:42,372 INFO L226 Difference]: Without dead ends: 1959
[2021-08-12 19:55:42,372 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756
[2021-08-12 19:55:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states.
[2021-08-12 19:55:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047.
[2021-08-12 19:55:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions.
[2021-08-12 19:55:42,565 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24
[2021-08-12 19:55:42,565 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:42,568 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions.
[2021-08-12 19:55:42,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions.
[2021-08-12 19:55:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:42,570 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:42,570 INFO L550 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]
[2021-08-12 19:55:42,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:42,770 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1787897448, now seen corresponding path program 32 times
[2021-08-12 19:55:42,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:42,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261123205]
[2021-08-12 19:55:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:42,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:42,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261123205]
[2021-08-12 19:55:42,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261123205] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:42,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875127137]
[2021-08-12 19:55:42,810 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:42,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:55:42,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:42,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:42,853 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:42,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875127137] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:42,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:42,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-08-12 19:55:42,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603337963]
[2021-08-12 19:55:42,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-08-12 19:55:42,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:42,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-08-12 19:55:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-08-12 19:55:42,912 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:44,032 INFO L93 Difference]: Finished difference Result 1753 states and 5544 transitions.
[2021-08-12 19:55:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:55:44,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:44,037 INFO L225 Difference]: With dead ends: 1753
[2021-08-12 19:55:44,037 INFO L226 Difference]: Without dead ends: 1716
[2021-08-12 19:55:44,038 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506
[2021-08-12 19:55:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states.
[2021-08-12 19:55:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047.
[2021-08-12 19:55:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions.
[2021-08-12 19:55:44,189 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24
[2021-08-12 19:55:44,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:44,189 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions.
[2021-08-12 19:55:44,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:44,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions.
[2021-08-12 19:55:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:44,191 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:44,192 INFO L550 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]
[2021-08-12 19:55:44,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:44,405 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -190770732, now seen corresponding path program 33 times
[2021-08-12 19:55:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:44,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046071243]
[2021-08-12 19:55:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:44,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:44,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046071243]
[2021-08-12 19:55:44,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046071243] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:44,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602992701]
[2021-08-12 19:55:44,448 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 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
[2021-08-12 19:55:44,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:55:44,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:44,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:44,479 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:44,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602992701] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:44,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:44,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:44,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472713115]
[2021-08-12 19:55:44,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:44,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:44,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:44,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:44,564 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:45,801 INFO L93 Difference]: Finished difference Result 1846 states and 5777 transitions.
[2021-08-12 19:55:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-08-12 19:55:45,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:45,805 INFO L225 Difference]: With dead ends: 1846
[2021-08-12 19:55:45,805 INFO L226 Difference]: Without dead ends: 1821
[2021-08-12 19:55:45,806 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 225.9ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870
[2021-08-12 19:55:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states.
[2021-08-12 19:55:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119.
[2021-08-12 19:55:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions.
[2021-08-12 19:55:45,961 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24
[2021-08-12 19:55:45,962 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:45,962 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions.
[2021-08-12 19:55:45,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions.
[2021-08-12 19:55:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:45,963 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:45,963 INFO L550 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]
[2021-08-12 19:55:46,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:46,166 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:46,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1452268422, now seen corresponding path program 34 times
[2021-08-12 19:55:46,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:46,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140268630]
[2021-08-12 19:55:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:46,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:46,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140268630]
[2021-08-12 19:55:46,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140268630] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:46,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65122657]
[2021-08-12 19:55:46,213 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 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
[2021-08-12 19:55:46,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:55:46,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:46,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:46,238 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:46,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65122657] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:46,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:46,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-08-12 19:55:46,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834037706]
[2021-08-12 19:55:46,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-08-12 19:55:46,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:46,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-08-12 19:55:46,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-08-12 19:55:46,310 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:47,549 INFO L93 Difference]: Finished difference Result 1815 states and 5702 transitions.
[2021-08-12 19:55:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-08-12 19:55:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:47,553 INFO L225 Difference]: With dead ends: 1815
[2021-08-12 19:55:47,553 INFO L226 Difference]: Without dead ends: 1786
[2021-08-12 19:55:47,554 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650
[2021-08-12 19:55:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states.
[2021-08-12 19:55:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119.
[2021-08-12 19:55:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions.
[2021-08-12 19:55:47,723 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24
[2021-08-12 19:55:47,723 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:47,723 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions.
[2021-08-12 19:55:47,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions.
[2021-08-12 19:55:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-08-12 19:55:47,725 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:47,726 INFO L550 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]
[2021-08-12 19:55:47,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2021-08-12 19:55:47,949 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:47,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:47,949 INFO L82 PathProgramCache]: Analyzing trace with hash 184811244, now seen corresponding path program 35 times
[2021-08-12 19:55:47,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:47,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026302321]
[2021-08-12 19:55:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:47,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:47,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026302321]
[2021-08-12 19:55:47,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026302321] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:47,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205603832]
[2021-08-12 19:55:47,990 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 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
[2021-08-12 19:55:48,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:55:48,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:48,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-08-12 19:55:48,016 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:48,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205603832] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:48,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:48,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-08-12 19:55:48,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448428570]
[2021-08-12 19:55:48,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-08-12 19:55:48,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:48,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-08-12 19:55:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-08-12 19:55:48,082 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:49,030 INFO L93 Difference]: Finished difference Result 1674 states and 5382 transitions.
[2021-08-12 19:55:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-08-12 19:55:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 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 24
[2021-08-12 19:55:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:49,034 INFO L225 Difference]: With dead ends: 1674
[2021-08-12 19:55:49,034 INFO L226 Difference]: Without dead ends: 1637
[2021-08-12 19:55:49,035 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:55:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states.
[2021-08-12 19:55:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119.
[2021-08-12 19:55:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions.
[2021-08-12 19:55:49,205 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24
[2021-08-12 19:55:49,205 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:49,205 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions.
[2021-08-12 19:55:49,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions.
[2021-08-12 19:55:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:55:49,207 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:49,207 INFO L550 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]
[2021-08-12 19:55:49,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:49,408 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash -998684486, now seen corresponding path program 4 times
[2021-08-12 19:55:49,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:49,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317003228]
[2021-08-12 19:55:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:49,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:49,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317003228]
[2021-08-12 19:55:49,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317003228] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:49,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656010917]
[2021-08-12 19:55:49,987 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)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:50,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:55:50,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:50,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:55:50,014 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:50,528 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,529 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,530 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:55:50,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,539 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,540 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:55:50,541 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,545 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,546 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,547 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:55:50,549 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,553 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,554 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:55:50,555 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,559 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,559 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,561 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:55:50,565 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,569 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,570 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,571 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:55:50,573 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,576 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,577 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,594 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 19:55:50,596 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,601 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,601 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,603 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:55:50,604 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,609 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,610 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,611 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:55:50,612 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,616 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,616 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,618 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:55:50,619 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,623 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,624 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,625 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:55:50,626 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,629 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,630 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,631 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:55:50,632 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,636 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,637 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:55:50,639 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,643 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,644 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:55:50,645 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,648 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:50,648 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:50,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:55:50,649 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:50,730 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 19:55:50,732 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:55:50,732 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 19:55:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:50,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656010917] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:50,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:50,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:55:50,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496021050]
[2021-08-12 19:55:50,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:55:50,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:50,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:55:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:55:50,830 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:51,561 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44
[2021-08-12 19:55:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:52,615 INFO L93 Difference]: Finished difference Result 1519 states and 4957 transitions.
[2021-08-12 19:55:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-08-12 19:55:52,616 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:55:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:52,619 INFO L225 Difference]: With dead ends: 1519
[2021-08-12 19:55:52,619 INFO L226 Difference]: Without dead ends: 1502
[2021-08-12 19:55:52,619 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1392.6ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702
[2021-08-12 19:55:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states.
[2021-08-12 19:55:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141.
[2021-08-12 19:55:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions.
[2021-08-12 19:55:52,789 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26
[2021-08-12 19:55:52,790 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:52,790 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions.
[2021-08-12 19:55:52,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions.
[2021-08-12 19:55:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:55:52,792 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:52,792 INFO L550 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]
[2021-08-12 19:55:53,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86
[2021-08-12 19:55:53,001 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:53,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1267884794, now seen corresponding path program 5 times
[2021-08-12 19:55:53,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:53,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551920746]
[2021-08-12 19:55:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:53,441 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43
[2021-08-12 19:55:53,822 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34
[2021-08-12 19:55:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:53,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:53,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551920746]
[2021-08-12 19:55:53,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551920746] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:53,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162513031]
[2021-08-12 19:55:53,899 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
[2021-08-12 19:55:53,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:55:53,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:53,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:55:53,927 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:54,470 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37
[2021-08-12 19:55:54,539 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_5, v_prenex_7], 3=[v_prenex_9, A]}
[2021-08-12 19:55:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:54,547 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:54,549 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:54,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:55:54,551 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:54,557 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:54,557 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:54,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:55:54,559 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:54,683 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51
[2021-08-12 19:55:54,683 INFO L628 ElimStorePlain]: treesize reduction 119, result has 50.4 percent of original size
[2021-08-12 19:55:54,687 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:54,687 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:54,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:55:54,689 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:54,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:55:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:54,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2021-08-12 19:55:54,736 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:54,774 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:55:54,777 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:54,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:55:54,779 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:54,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:55:54,816 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:55:54,816 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:281, output treesize:56
[2021-08-12 19:55:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:54,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162513031] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:54,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:54,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:55:54,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978422470]
[2021-08-12 19:55:54,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:55:54,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:54,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:55:54,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:55:54,875 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:55:56,523 INFO L93 Difference]: Finished difference Result 1497 states and 4901 transitions.
[2021-08-12 19:55:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-08-12 19:55:56,524 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:55:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:55:56,527 INFO L225 Difference]: With dead ends: 1497
[2021-08-12 19:55:56,527 INFO L226 Difference]: Without dead ends: 1480
[2021-08-12 19:55:56,528 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1707.8ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702
[2021-08-12 19:55:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states.
[2021-08-12 19:55:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1150.
[2021-08-12 19:55:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.3568320278503045) internal successors, (3857), 1149 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions.
[2021-08-12 19:55:56,709 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26
[2021-08-12 19:55:56,709 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:55:56,709 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions.
[2021-08-12 19:55:56,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions.
[2021-08-12 19:55:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:55:56,712 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:55:56,712 INFO L550 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]
[2021-08-12 19:55:56,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:55:56,912 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:55:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:55:56,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1435653194, now seen corresponding path program 36 times
[2021-08-12 19:55:56,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:55:56,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122412432]
[2021-08-12 19:55:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:55:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:55:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:57,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:55:57,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122412432]
[2021-08-12 19:55:57,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122412432] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:57,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390808632]
[2021-08-12 19:55:57,486 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
[2021-08-12 19:55:57,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:55:57,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:55:57,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:55:57,514 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:55:58,180 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,181 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,182 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,182 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,183 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,185 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-08-12 19:55:58,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,192 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,194 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,196 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,198 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:55:58,199 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,204 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,204 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,205 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,206 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,207 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,209 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:55:58,211 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,216 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,216 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,218 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,219 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,220 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 19:55:58,222 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,227 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,228 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,228 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,230 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,231 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:55:58,232 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,237 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,237 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,238 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,239 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,240 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,241 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:55:58,243 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,248 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,248 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,249 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,251 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,252 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-08-12 19:55:58,254 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,259 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,259 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,260 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,260 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,262 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,263 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:55:58,265 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,270 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,271 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,271 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,273 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,274 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:55:58,276 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,281 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,282 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,283 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,285 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 19:55:58,287 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,293 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,294 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,295 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,297 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,298 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-08-12 19:55:58,300 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,306 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,306 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,309 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,309 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-08-12 19:55:58,311 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,316 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,317 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,318 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,319 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,320 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-08-12 19:55:58,323 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,327 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,328 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,328 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,329 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,331 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:55:58,332 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,335 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,336 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:55:58,337 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,337 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:55:58,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:55:58,339 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:55:58,378 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size
[2021-08-12 19:55:58,379 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:55:58,380 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-08-12 19:55:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:55:58,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390808632] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:55:58,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:55:58,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-08-12 19:55:58,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022327518]
[2021-08-12 19:55:58,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:55:58,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:55:58,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:55:58,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:55:58,416 INFO L87 Difference]: Start difference. First operand 1150 states and 3857 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:55:58,877 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44
[2021-08-12 19:55:59,708 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47
[2021-08-12 19:56:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:00,865 INFO L93 Difference]: Finished difference Result 1609 states and 5194 transitions.
[2021-08-12 19:56:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-08-12 19:56:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:56:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:00,869 INFO L225 Difference]: With dead ends: 1609
[2021-08-12 19:56:00,869 INFO L226 Difference]: Without dead ends: 1592
[2021-08-12 19:56:00,869 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1880.1ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190
[2021-08-12 19:56:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states.
[2021-08-12 19:56:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180.
[2021-08-12 19:56:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.340966921119593) internal successors, (3939), 1179 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions.
[2021-08-12 19:56:01,057 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26
[2021-08-12 19:56:01,058 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:01,058 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions.
[2021-08-12 19:56:01,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions.
[2021-08-12 19:56:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:01,059 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:01,059 INFO L550 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]
[2021-08-12 19:56:01,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129
[2021-08-12 19:56:01,260 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash -630606018, now seen corresponding path program 6 times
[2021-08-12 19:56:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:01,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458420405]
[2021-08-12 19:56:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:01,598 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43
[2021-08-12 19:56:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:01,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:01,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458420405]
[2021-08-12 19:56:01,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458420405] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:01,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722306348]
[2021-08-12 19:56:01,809 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 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
[2021-08-12 19:56:01,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:56:01,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:01,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:56:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:02,113 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,119 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:02,120 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,124 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:56:02,131 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,135 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:02,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:56:02,147 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,152 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,159 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:02,160 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,164 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:02,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 19:56:02,185 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,190 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,196 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:02,197 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,202 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:02,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:56:02,213 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,230 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,236 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:56:02,237 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,240 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,247 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:02,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:56:02,261 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,267 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,276 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:02,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:56:02,278 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,291 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:02,292 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,297 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,303 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:02,304 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,308 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,318 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:02,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:56:02,321 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,326 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,337 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:02,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:56:02,340 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,345 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,354 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:02,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 19:56:02,357 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,361 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:02,365 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:02,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:02,366 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:02,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:02,464 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:56:02,464 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-08-12 19:56:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:02,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722306348] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:02,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:02,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-08-12 19:56:02,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122259565]
[2021-08-12 19:56:02,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:56:02,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:02,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:56:02,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:56:02,698 INFO L87 Difference]: Start difference. First operand 1180 states and 3939 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:03,095 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54
[2021-08-12 19:56:03,243 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35
[2021-08-12 19:56:03,408 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53
[2021-08-12 19:56:03,871 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48
[2021-08-12 19:56:04,009 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46
[2021-08-12 19:56:04,152 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54
[2021-08-12 19:56:04,611 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51
[2021-08-12 19:56:04,772 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66
[2021-08-12 19:56:05,104 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45
[2021-08-12 19:56:05,395 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68
[2021-08-12 19:56:05,567 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62
[2021-08-12 19:56:06,027 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29
[2021-08-12 19:56:06,396 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65
[2021-08-12 19:56:06,908 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42
[2021-08-12 19:56:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:07,383 INFO L93 Difference]: Finished difference Result 1844 states and 5909 transitions.
[2021-08-12 19:56:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-08-12 19:56:07,383 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:56:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:07,388 INFO L225 Difference]: With dead ends: 1844
[2021-08-12 19:56:07,388 INFO L226 Difference]: Without dead ends: 1827
[2021-08-12 19:56:07,389 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3584.0ms TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892
[2021-08-12 19:56:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states.
[2021-08-12 19:56:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1198.
[2021-08-12 19:56:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.346700083542189) internal successors, (4006), 1197 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions.
[2021-08-12 19:56:07,696 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26
[2021-08-12 19:56:07,696 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:07,696 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions.
[2021-08-12 19:56:07,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions.
[2021-08-12 19:56:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:07,699 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:07,699 INFO L550 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]
[2021-08-12 19:56:07,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:56:07,923 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash 919775546, now seen corresponding path program 37 times
[2021-08-12 19:56:07,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:07,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146009177]
[2021-08-12 19:56:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:08,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:08,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146009177]
[2021-08-12 19:56:08,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146009177] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:08,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456804906]
[2021-08-12 19:56:08,407 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 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
[2021-08-12 19:56:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:08,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 19:56:08,435 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:09,089 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,090 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,091 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,092 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,092 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,094 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-08-12 19:56:09,096 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,101 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,103 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,104 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,106 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7
[2021-08-12 19:56:09,108 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,113 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,116 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,116 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,118 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:56:09,120 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,124 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,125 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,126 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,126 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,127 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,129 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-08-12 19:56:09,130 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,135 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,136 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,136 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,137 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,137 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,139 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:56:09,142 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,146 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,147 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,149 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,150 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,150 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,152 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2021-08-12 19:56:09,153 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,158 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,160 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,160 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,162 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13
[2021-08-12 19:56:09,164 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,169 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,170 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,171 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,172 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,172 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,175 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 19:56:09,176 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,181 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,183 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,183 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,186 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13
[2021-08-12 19:56:09,187 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,192 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,194 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,195 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,196 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,198 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13
[2021-08-12 19:56:09,200 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,204 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,206 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,206 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,208 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 19:56:09,210 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,214 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,215 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,216 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,216 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,217 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,219 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-08-12 19:56:09,220 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,225 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,227 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,227 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,229 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 19:56:09,231 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,235 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,236 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,237 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,238 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,238 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,241 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16
[2021-08-12 19:56:09,242 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,246 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,248 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,248 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,249 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,251 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-08-12 19:56:09,252 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,256 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,256 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:09,258 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:09,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-08-12 19:56:09,261 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:09,300 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size
[2021-08-12 19:56:09,301 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:56:09,301 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27
[2021-08-12 19:56:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:09,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456804906] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:09,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:09,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-08-12 19:56:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695633231]
[2021-08-12 19:56:09,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:56:09,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:56:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:56:09,339 INFO L87 Difference]: Start difference. First operand 1198 states and 4006 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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)
[2021-08-12 19:56:09,777 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40
[2021-08-12 19:56:10,584 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44
[2021-08-12 19:56:10,754 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56
[2021-08-12 19:56:10,970 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44
[2021-08-12 19:56:11,124 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47
[2021-08-12 19:56:11,737 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51
[2021-08-12 19:56:12,344 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52
[2021-08-12 19:56:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:13,298 INFO L93 Difference]: Finished difference Result 1799 states and 5749 transitions.
[2021-08-12 19:56:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-08-12 19:56:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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 26
[2021-08-12 19:56:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:13,302 INFO L225 Difference]: With dead ends: 1799
[2021-08-12 19:56:13,302 INFO L226 Difference]: Without dead ends: 1782
[2021-08-12 19:56:13,303 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2816.8ms TimeCoverageRelationStatistics Valid=356, Invalid=1624, Unknown=0, NotChecked=0, Total=1980
[2021-08-12 19:56:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states.
[2021-08-12 19:56:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1206.
[2021-08-12 19:56:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.349377593360996) internal successors, (4036), 1205 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions.
[2021-08-12 19:56:13,535 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26
[2021-08-12 19:56:13,535 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:13,535 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions.
[2021-08-12 19:56:13,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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)
[2021-08-12 19:56:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions.
[2021-08-12 19:56:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:13,537 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:13,537 INFO L550 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]
[2021-08-12 19:56:13,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254
[2021-08-12 19:56:13,737 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:13,738 INFO L82 PathProgramCache]: Analyzing trace with hash -56543298, now seen corresponding path program 38 times
[2021-08-12 19:56:13,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:13,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324636349]
[2021-08-12 19:56:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:14,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:14,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324636349]
[2021-08-12 19:56:14,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324636349] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:14,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360509086]
[2021-08-12 19:56:14,309 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 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
[2021-08-12 19:56:14,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:56:14,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:14,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core
[2021-08-12 19:56:14,336 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:15,109 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,158 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size
[2021-08-12 19:56:15,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51
[2021-08-12 19:56:15,169 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,179 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,233 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size
[2021-08-12 19:56:15,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51
[2021-08-12 19:56:15,245 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,257 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,306 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 19:56:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44
[2021-08-12 19:56:15,315 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,326 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,343 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 19:56:15,344 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,400 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 19:56:15,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44
[2021-08-12 19:56:15,410 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,469 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size
[2021-08-12 19:56:15,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 42
[2021-08-12 19:56:15,474 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,485 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,503 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1
[2021-08-12 19:56:15,504 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,515 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,572 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 19:56:15,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55
[2021-08-12 19:56:15,586 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,613 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1
[2021-08-12 19:56:15,614 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,624 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,662 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 19:56:15,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44
[2021-08-12 19:56:15,669 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,696 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1
[2021-08-12 19:56:15,697 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,741 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 19:56:15,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44
[2021-08-12 19:56:15,762 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,773 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,790 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1
[2021-08-12 19:56:15,791 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,801 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,818 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 19:56:15,819 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,829 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,882 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 19:56:15,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 49
[2021-08-12 19:56:15,892 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:15,907 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 19:56:15,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 1
[2021-08-12 19:56:15,908 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:16,216 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52
[2021-08-12 19:56:16,217 INFO L628 ElimStorePlain]: treesize reduction 109, result has 76.9 percent of original size
[2021-08-12 19:56:16,239 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:56:16,239 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:437
[2021-08-12 19:56:16,515 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46
[2021-08-12 19:56:16,675 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31
[2021-08-12 19:56:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:16,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360509086] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:16,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:16,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22
[2021-08-12 19:56:16,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889329141]
[2021-08-12 19:56:16,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states
[2021-08-12 19:56:16,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:16,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-08-12 19:56:16,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506
[2021-08-12 19:56:16,717 INFO L87 Difference]: Start difference. First operand 1206 states and 4036 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:17,968 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58
[2021-08-12 19:56:18,611 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59
[2021-08-12 19:56:18,769 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59
[2021-08-12 19:56:18,988 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48
[2021-08-12 19:56:19,609 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74
[2021-08-12 19:56:20,315 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76
[2021-08-12 19:56:20,695 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74
[2021-08-12 19:56:20,886 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59
[2021-08-12 19:56:21,060 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63
[2021-08-12 19:56:21,707 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67
[2021-08-12 19:56:22,405 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68
[2021-08-12 19:56:22,621 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 46
[2021-08-12 19:56:23,138 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67
[2021-08-12 19:56:23,555 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65
[2021-08-12 19:56:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:24,054 INFO L93 Difference]: Finished difference Result 2307 states and 7132 transitions.
[2021-08-12 19:56:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-08-12 19:56:24,054 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 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
[2021-08-12 19:56:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:24,059 INFO L225 Difference]: With dead ends: 2307
[2021-08-12 19:56:24,059 INFO L226 Difference]: Without dead ends: 2260
[2021-08-12 19:56:24,060 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 5964.4ms TimeCoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540
[2021-08-12 19:56:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states.
[2021-08-12 19:56:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1349.
[2021-08-12 19:56:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.306379821958457) internal successors, (4457), 1348 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4457 transitions.
[2021-08-12 19:56:24,360 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4457 transitions. Word has length 26
[2021-08-12 19:56:24,360 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:24,360 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 4457 transitions.
[2021-08-12 19:56:24,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4457 transitions.
[2021-08-12 19:56:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:24,362 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:24,362 INFO L550 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]
[2021-08-12 19:56:24,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:56:24,563 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:24,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2141610526, now seen corresponding path program 7 times
[2021-08-12 19:56:24,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:24,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003973820]
[2021-08-12 19:56:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:25,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:25,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003973820]
[2021-08-12 19:56:25,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003973820] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:25,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122457964]
[2021-08-12 19:56:25,085 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 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
[2021-08-12 19:56:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:25,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:56:25,111 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:25,527 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,529 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:56:25,530 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,536 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,537 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,538 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:25,539 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,544 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,544 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,546 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:25,547 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,551 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,552 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,553 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:25,555 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,559 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,560 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,565 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:25,567 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,572 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,573 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:25,575 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,580 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,581 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:25,582 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,587 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,587 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,589 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:25,591 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,595 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,596 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,597 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:25,598 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,603 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,605 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:56:25,608 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,612 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,613 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,614 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:56:25,616 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,620 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,621 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,622 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:25,626 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,630 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,630 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,632 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:25,633 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,637 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,638 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,639 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 19:56:25,641 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,645 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:25,646 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:25,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:56:25,648 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:25,734 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 19:56:25,736 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:56:25,736 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 19:56:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:25,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122457964] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:25,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:25,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:56:25,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863365408]
[2021-08-12 19:56:25,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:56:25,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:25,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:56:25,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:56:25,789 INFO L87 Difference]: Start difference. First operand 1349 states and 4457 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:28,047 INFO L93 Difference]: Finished difference Result 1746 states and 5648 transitions.
[2021-08-12 19:56:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-08-12 19:56:28,047 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:56:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:28,051 INFO L225 Difference]: With dead ends: 1746
[2021-08-12 19:56:28,051 INFO L226 Difference]: Without dead ends: 1729
[2021-08-12 19:56:28,052 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1381.7ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812
[2021-08-12 19:56:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states.
[2021-08-12 19:56:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1360.
[2021-08-12 19:56:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3038999264164826) internal successors, (4490), 1359 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4490 transitions.
[2021-08-12 19:56:28,332 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4490 transitions. Word has length 26
[2021-08-12 19:56:28,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:28,332 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 4490 transitions.
[2021-08-12 19:56:28,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4490 transitions.
[2021-08-12 19:56:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:28,334 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:28,334 INFO L550 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]
[2021-08-12 19:56:28,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486
[2021-08-12 19:56:28,535 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash 124958754, now seen corresponding path program 8 times
[2021-08-12 19:56:28,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:28,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168701579]
[2021-08-12 19:56:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:28,762 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41
[2021-08-12 19:56:28,901 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43
[2021-08-12 19:56:29,033 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41
[2021-08-12 19:56:29,271 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34
[2021-08-12 19:56:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:29,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:29,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168701579]
[2021-08-12 19:56:29,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168701579] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:29,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156409735]
[2021-08-12 19:56:29,323 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 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
[2021-08-12 19:56:29,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:56:29,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:29,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 19:56:29,350 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:29,727 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 47
[2021-08-12 19:56:29,882 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:29,886 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:29,893 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-08-12 19:56:29,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22
[2021-08-12 19:56:29,894 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:29,907 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:29,908 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:29,925 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-08-12 19:56:29,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 30
[2021-08-12 19:56:29,927 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:30,324 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 130
[2021-08-12 19:56:30,324 INFO L628 ElimStorePlain]: treesize reduction 403, result has 46.9 percent of original size
[2021-08-12 19:56:30,343 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:30,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 19:56:30,348 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:30,483 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 123
[2021-08-12 19:56:30,483 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:30,493 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:30,494 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:30,506 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:30,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37
[2021-08-12 19:56:30,511 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:30,647 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 122
[2021-08-12 19:56:30,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:30,655 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:30,671 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-08-12 19:56:30,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30
[2021-08-12 19:56:30,676 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:30,810 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114
[2021-08-12 19:56:30,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:30,830 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:56:30,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:56:30,831 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:30,960 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 110
[2021-08-12 19:56:30,960 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:30,968 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:30,968 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:30,980 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size
[2021-08-12 19:56:30,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 19:56:30,982 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:31,105 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 105
[2021-08-12 19:56:31,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:31,112 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:31,124 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:31,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37
[2021-08-12 19:56:31,125 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:31,248 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2021-08-12 19:56:31,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:31,269 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:56:31,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 19:56:31,274 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:31,395 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 92
[2021-08-12 19:56:31,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:31,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:56:31,436 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 16 variables, input treesize:825, output treesize:551
[2021-08-12 19:56:31,735 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57
[2021-08-12 19:56:31,968 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38
[2021-08-12 19:56:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:32,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156409735] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:32,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:32,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 19:56:32,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705913197]
[2021-08-12 19:56:32,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:56:32,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:32,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:56:32,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:56:32,102 INFO L87 Difference]: Start difference. First operand 1360 states and 4490 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:32,785 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54
[2021-08-12 19:56:32,930 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42
[2021-08-12 19:56:33,149 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44
[2021-08-12 19:56:33,352 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53
[2021-08-12 19:56:33,586 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60
[2021-08-12 19:56:33,848 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 46
[2021-08-12 19:56:34,232 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59
[2021-08-12 19:56:34,628 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 50
[2021-08-12 19:56:35,218 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69
[2021-08-12 19:56:35,661 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70
[2021-08-12 19:56:36,171 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55
[2021-08-12 19:56:36,338 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 59
[2021-08-12 19:56:36,822 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41
[2021-08-12 19:56:37,219 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77
[2021-08-12 19:56:37,679 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56
[2021-08-12 19:56:38,172 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43
[2021-08-12 19:56:38,746 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74
[2021-08-12 19:56:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:39,492 INFO L93 Difference]: Finished difference Result 2018 states and 6374 transitions.
[2021-08-12 19:56:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2021-08-12 19:56:39,493 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:56:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:39,497 INFO L225 Difference]: With dead ends: 2018
[2021-08-12 19:56:39,497 INFO L226 Difference]: Without dead ends: 2001
[2021-08-12 19:56:39,498 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 6523.9ms TimeCoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162
[2021-08-12 19:56:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states.
[2021-08-12 19:56:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1371.
[2021-08-12 19:56:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.3124087591240876) internal successors, (4538), 1370 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4538 transitions.
[2021-08-12 19:56:39,803 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4538 transitions. Word has length 26
[2021-08-12 19:56:39,803 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:39,804 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 4538 transitions.
[2021-08-12 19:56:39,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4538 transitions.
[2021-08-12 19:56:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:39,806 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:39,806 INFO L550 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]
[2021-08-12 19:56:40,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable518
[2021-08-12 19:56:40,007 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1812450954, now seen corresponding path program 9 times
[2021-08-12 19:56:40,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:40,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270411264]
[2021-08-12 19:56:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:40,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:40,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270411264]
[2021-08-12 19:56:40,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270411264] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:40,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748724275]
[2021-08-12 19:56:40,380 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 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
[2021-08-12 19:56:40,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:56:40,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:40,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:56:40,407 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,906 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,907 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:40,915 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,919 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,920 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:40,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,924 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,925 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,926 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:56:40,927 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,931 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,932 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:40,933 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,936 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,937 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,939 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:40,941 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,944 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,945 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,946 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:56:40,947 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,954 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,955 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,956 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:40,958 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,962 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,962 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,963 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:40,965 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,968 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,968 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,969 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:40,970 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,974 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,974 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,975 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:40,976 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,980 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,980 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,981 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:40,982 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,985 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,986 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,987 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:56:40,987 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,991 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,991 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,992 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 19:56:40,993 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:40,996 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,997 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:40,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:40,998 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:41,001 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:41,002 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:41,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:56:41,003 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:41,079 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 19:56:41,081 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:56:41,081 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 19:56:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:41,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748724275] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:41,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:41,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:56:41,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168410983]
[2021-08-12 19:56:41,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:56:41,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:41,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:56:41,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:56:41,133 INFO L87 Difference]: Start difference. First operand 1371 states and 4538 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:41,878 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47
[2021-08-12 19:56:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:43,809 INFO L93 Difference]: Finished difference Result 1861 states and 6004 transitions.
[2021-08-12 19:56:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:56:43,809 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:56:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:43,813 INFO L225 Difference]: With dead ends: 1861
[2021-08-12 19:56:43,813 INFO L226 Difference]: Without dead ends: 1844
[2021-08-12 19:56:43,814 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1601.4ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992
[2021-08-12 19:56:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states.
[2021-08-12 19:56:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1380.
[2021-08-12 19:56:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions.
[2021-08-12 19:56:44,125 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26
[2021-08-12 19:56:44,125 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:44,125 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions.
[2021-08-12 19:56:44,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions.
[2021-08-12 19:56:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:44,127 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:44,127 INFO L550 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]
[2021-08-12 19:56:44,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:56:44,328 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:44,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1980260046, now seen corresponding path program 10 times
[2021-08-12 19:56:44,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:44,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405174962]
[2021-08-12 19:56:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:44,630 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44
[2021-08-12 19:56:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:44,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:44,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405174962]
[2021-08-12 19:56:44,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405174962] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:44,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852337259]
[2021-08-12 19:56:44,917 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 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
[2021-08-12 19:56:44,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:56:44,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:44,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:56:44,943 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,330 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,331 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:45,333 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,337 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,338 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,339 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:45,341 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,345 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,347 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:45,348 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,352 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,354 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:56:45,355 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,359 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,359 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,361 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:56:45,364 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,369 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,370 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:45,372 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,376 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,377 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,378 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:56:45,380 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,384 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,386 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:45,387 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,391 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,393 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:56:45,394 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,398 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,399 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,400 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:45,402 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,406 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,406 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,407 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:45,410 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,415 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,416 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:45,417 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,422 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,423 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:45,424 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,429 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,430 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:45,432 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,435 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:45,436 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:56:45,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 19:56:45,437 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:45,514 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 19:56:45,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:56:45,516 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 19:56:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:45,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852337259] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:45,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:45,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-08-12 19:56:45,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490691765]
[2021-08-12 19:56:45,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-08-12 19:56:45,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:45,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-08-12 19:56:45,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240
[2021-08-12 19:56:45,577 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:47,494 INFO L93 Difference]: Finished difference Result 1724 states and 5633 transitions.
[2021-08-12 19:56:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-08-12 19:56:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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
[2021-08-12 19:56:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:47,499 INFO L225 Difference]: With dead ends: 1724
[2021-08-12 19:56:47,499 INFO L226 Difference]: Without dead ends: 1707
[2021-08-12 19:56:47,499 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1176.0ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462
[2021-08-12 19:56:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states.
[2021-08-12 19:56:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1380.
[2021-08-12 19:56:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions.
[2021-08-12 19:56:47,806 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26
[2021-08-12 19:56:47,806 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:47,806 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions.
[2021-08-12 19:56:47,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions.
[2021-08-12 19:56:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:47,808 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:47,809 INFO L550 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]
[2021-08-12 19:56:48,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable599
[2021-08-12 19:56:48,009 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:48,009 INFO L82 PathProgramCache]: Analyzing trace with hash 247191222, now seen corresponding path program 11 times
[2021-08-12 19:56:48,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:48,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589439825]
[2021-08-12 19:56:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:48,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:48,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589439825]
[2021-08-12 19:56:48,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589439825] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:48,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78858026]
[2021-08-12 19:56:48,437 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 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
[2021-08-12 19:56:48,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:56:48,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:48,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:56:48,464 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,848 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:48,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 19:56:48,850 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,862 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:48,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:56:48,863 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,868 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,873 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:48,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:48,874 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,878 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,883 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:48,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:48,883 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,892 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:48,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:48,893 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:48,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:56:48,905 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,909 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:48,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:56:48,921 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,932 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:48,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:56:48,936 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,940 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,945 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:48,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:48,946 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,950 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:48,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 19:56:48,961 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,965 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,970 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:48,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:48,970 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,974 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,979 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:48,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:56:48,980 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,983 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:48,990 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:48,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:56:48,992 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:48,996 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:49,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:49,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:56:49,003 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:49,008 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:49,012 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:49,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:56:49,013 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:49,019 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:49,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:49,020 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:49,104 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:49,110 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:56:49,110 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174
[2021-08-12 19:56:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:49,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78858026] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:49,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:49,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 19:56:49,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364218453]
[2021-08-12 19:56:49,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:56:49,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:49,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:56:49,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:56:49,307 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:49,796 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 39
[2021-08-12 19:56:50,019 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60
[2021-08-12 19:56:50,542 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49
[2021-08-12 19:56:50,733 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59
[2021-08-12 19:56:51,076 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50
[2021-08-12 19:56:51,499 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49
[2021-08-12 19:56:52,629 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47
[2021-08-12 19:56:52,755 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33
[2021-08-12 19:56:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:56:53,958 INFO L93 Difference]: Finished difference Result 2176 states and 6965 transitions.
[2021-08-12 19:56:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-08-12 19:56:53,960 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:56:53,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:56:53,964 INFO L225 Difference]: With dead ends: 2176
[2021-08-12 19:56:53,964 INFO L226 Difference]: Without dead ends: 2144
[2021-08-12 19:56:53,965 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2888.6ms TimeCoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892
[2021-08-12 19:56:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states.
[2021-08-12 19:56:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1380.
[2021-08-12 19:56:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions.
[2021-08-12 19:56:54,283 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26
[2021-08-12 19:56:54,283 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:56:54,283 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions.
[2021-08-12 19:56:54,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions.
[2021-08-12 19:56:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:56:54,286 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:56:54,286 INFO L550 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]
[2021-08-12 19:56:54,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable631
[2021-08-12 19:56:54,506 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:56:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:56:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash 317421942, now seen corresponding path program 12 times
[2021-08-12 19:56:54,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:56:54,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918585934]
[2021-08-12 19:56:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:56:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:56:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:55,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:56:55,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918585934]
[2021-08-12 19:56:55,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918585934] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:55,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614920761]
[2021-08-12 19:56:55,132 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 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
[2021-08-12 19:56:55,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:56:55,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:56:55,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:56:55,177 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:56:55,417 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,422 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:55,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,427 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,431 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:56:55,432 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,436 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:55,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:56:55,446 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,450 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,455 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:55,456 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,460 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,467 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:55,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 19:56:55,471 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,480 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:55,481 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,484 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:55,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:56:55,493 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,497 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,504 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:56:55,505 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,510 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,521 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:55,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:56:55,526 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,542 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:55,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:56:55,545 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,550 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,557 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:56:55,559 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,563 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,570 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:56:55,571 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,583 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:55,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:56:55,585 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,591 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,601 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:55,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:56:55,604 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,608 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,617 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:56:55,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 19:56:55,619 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,624 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:56:55,627 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:56:55,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:56:55,628 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:56:55,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:56:55,719 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:56:55,719 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-08-12 19:56:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:56:55,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614920761] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:56:55,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:56:55,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-08-12 19:56:55,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663693919]
[2021-08-12 19:56:55,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:56:55,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:56:55,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:56:55,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:56:55,920 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:56:56,392 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49
[2021-08-12 19:56:56,678 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56
[2021-08-12 19:56:56,814 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47
[2021-08-12 19:56:57,191 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48
[2021-08-12 19:56:57,749 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49
[2021-08-12 19:56:58,116 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54
[2021-08-12 19:56:58,464 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61
[2021-08-12 19:56:58,620 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47
[2021-08-12 19:56:59,453 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55
[2021-08-12 19:56:59,965 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 42
[2021-08-12 19:57:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:00,616 INFO L93 Difference]: Finished difference Result 1984 states and 6432 transitions.
[2021-08-12 19:57:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-08-12 19:57:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:57:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:00,621 INFO L225 Difference]: With dead ends: 1984
[2021-08-12 19:57:00,621 INFO L226 Difference]: Without dead ends: 1967
[2021-08-12 19:57:00,622 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 3453.2ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806
[2021-08-12 19:57:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states.
[2021-08-12 19:57:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1380.
[2021-08-12 19:57:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions.
[2021-08-12 19:57:00,949 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26
[2021-08-12 19:57:00,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:00,949 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions.
[2021-08-12 19:57:00,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions.
[2021-08-12 19:57:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:00,951 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:00,951 INFO L550 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]
[2021-08-12 19:57:01,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable672
[2021-08-12 19:57:01,152 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1219202938, now seen corresponding path program 39 times
[2021-08-12 19:57:01,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:01,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609197900]
[2021-08-12 19:57:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:01,497 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50
[2021-08-12 19:57:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:01,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:01,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609197900]
[2021-08-12 19:57:01,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609197900] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:01,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787410371]
[2021-08-12 19:57:01,745 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 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
[2021-08-12 19:57:01,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:57:01,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:01,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:57:01,772 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:02,359 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,360 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,361 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,361 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,362 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,365 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-08-12 19:57:02,366 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,370 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,371 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,372 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,372 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,372 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,374 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:02,375 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,379 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,379 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,380 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,380 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,381 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,383 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-08-12 19:57:02,384 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,387 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,388 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,389 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,389 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,390 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,392 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:57:02,393 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,398 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,398 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,399 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,399 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,400 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,402 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:57:02,404 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,407 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,408 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,409 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,409 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,409 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,411 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:57:02,412 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,416 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,416 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,417 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,418 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,420 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:02,421 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,424 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,425 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,425 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,426 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,426 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,428 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-08-12 19:57:02,430 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,433 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,435 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,435 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,437 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:57:02,438 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,442 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,444 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,444 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,446 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-08-12 19:57:02,447 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,455 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,456 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,456 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,457 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,457 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,459 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 19:57:02,460 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,464 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,464 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,465 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,465 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,466 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,468 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:02,469 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,472 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,472 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,476 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-08-12 19:57:02,477 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,480 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,482 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,482 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,484 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 19:57:02,485 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,487 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,488 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:02,488 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:02,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:02,489 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:02,515 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size
[2021-08-12 19:57:02,517 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:57:02,517 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-08-12 19:57:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:02,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787410371] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:02,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:02,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19
[2021-08-12 19:57:02,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408331054]
[2021-08-12 19:57:02,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:57:02,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:02,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:57:02,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:57:02,556 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:02,975 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60
[2021-08-12 19:57:03,325 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50
[2021-08-12 19:57:03,491 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70
[2021-08-12 19:57:04,070 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62
[2021-08-12 19:57:04,394 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56
[2021-08-12 19:57:04,552 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60
[2021-08-12 19:57:05,043 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67
[2021-08-12 19:57:06,978 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47
[2021-08-12 19:57:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:09,643 INFO L93 Difference]: Finished difference Result 3229 states and 9976 transitions.
[2021-08-12 19:57:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-08-12 19:57:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:57:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:09,650 INFO L225 Difference]: With dead ends: 3229
[2021-08-12 19:57:09,650 INFO L226 Difference]: Without dead ends: 3182
[2021-08-12 19:57:09,651 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 4280.9ms TimeCoverageRelationStatistics Valid=669, Invalid=3363, Unknown=0, NotChecked=0, Total=4032
[2021-08-12 19:57:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states.
[2021-08-12 19:57:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 1395.
[2021-08-12 19:57:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1394 states have (on average 3.33142037302726) internal successors, (4644), 1394 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 4644 transitions.
[2021-08-12 19:57:10,004 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 4644 transitions. Word has length 26
[2021-08-12 19:57:10,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:10,005 INFO L482 AbstractCegarLoop]: Abstraction has 1395 states and 4644 transitions.
[2021-08-12 19:57:10,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 4644 transitions.
[2021-08-12 19:57:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:10,007 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:10,007 INFO L550 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]
[2021-08-12 19:57:10,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable689
[2021-08-12 19:57:10,208 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:10,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1873451990, now seen corresponding path program 40 times
[2021-08-12 19:57:10,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:10,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917357291]
[2021-08-12 19:57:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:10,554 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51
[2021-08-12 19:57:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:10,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:10,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917357291]
[2021-08-12 19:57:10,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917357291] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:10,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855771457]
[2021-08-12 19:57:10,800 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 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
[2021-08-12 19:57:10,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:57:10,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:10,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 19:57:10,827 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:11,392 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,393 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,393 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,394 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,395 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:57:11,396 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,400 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,401 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,401 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,401 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,403 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:11,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,408 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,409 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,409 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,410 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,411 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:57:11,412 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,416 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,417 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,417 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,417 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,419 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-08-12 19:57:11,421 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,424 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,425 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,425 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,426 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,427 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:11,429 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,441 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,442 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,442 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,443 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,445 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:11,446 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,450 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,451 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,452 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,453 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 19:57:11,454 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,459 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,460 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,460 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,461 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,464 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:57:11,465 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,469 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,470 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,471 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,472 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:57:11,474 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,479 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,480 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,480 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,481 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,484 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-08-12 19:57:11,485 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,490 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,492 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,492 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,493 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,495 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:11,497 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,502 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,502 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,503 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,504 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,506 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-08-12 19:57:11,507 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,511 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,511 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,512 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,512 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,514 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 19:57:11,516 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,519 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,520 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,521 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,521 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,523 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-08-12 19:57:11,525 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,527 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:11,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:11,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-08-12 19:57:11,530 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:11,557 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size
[2021-08-12 19:57:11,558 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:57:11,558 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-08-12 19:57:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:11,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855771457] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:11,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:11,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19
[2021-08-12 19:57:11,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078866796]
[2021-08-12 19:57:11,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:57:11,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:11,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:57:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:57:11,596 INFO L87 Difference]: Start difference. First operand 1395 states and 4644 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:12,145 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59
[2021-08-12 19:57:12,761 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65
[2021-08-12 19:57:13,067 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53
[2021-08-12 19:57:13,467 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62
[2021-08-12 19:57:13,647 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49
[2021-08-12 19:57:13,764 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49
[2021-08-12 19:57:13,961 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68
[2021-08-12 19:57:14,445 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68
[2021-08-12 19:57:14,942 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58
[2021-08-12 19:57:16,643 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44
[2021-08-12 19:57:16,840 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68
[2021-08-12 19:57:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:18,402 INFO L93 Difference]: Finished difference Result 3011 states and 9480 transitions.
[2021-08-12 19:57:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-08-12 19:57:18,402 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:57:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:18,408 INFO L225 Difference]: With dead ends: 3011
[2021-08-12 19:57:18,408 INFO L226 Difference]: Without dead ends: 2964
[2021-08-12 19:57:18,409 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 4015.3ms TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306
[2021-08-12 19:57:18,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states.
[2021-08-12 19:57:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1398.
[2021-08-12 19:57:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 3.3335719398711525) internal successors, (4657), 1397 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4657 transitions.
[2021-08-12 19:57:18,812 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4657 transitions. Word has length 26
[2021-08-12 19:57:18,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:18,812 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 4657 transitions.
[2021-08-12 19:57:18,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4657 transitions.
[2021-08-12 19:57:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:18,814 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:18,815 INFO L550 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]
[2021-08-12 19:57:19,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable795
[2021-08-12 19:57:19,015 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:19,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:19,015 INFO L82 PathProgramCache]: Analyzing trace with hash -39803338, now seen corresponding path program 41 times
[2021-08-12 19:57:19,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:19,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985063856]
[2021-08-12 19:57:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:19,298 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36
[2021-08-12 19:57:19,426 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54
[2021-08-12 19:57:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:19,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:19,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985063856]
[2021-08-12 19:57:19,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985063856] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:19,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216366792]
[2021-08-12 19:57:19,575 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 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
[2021-08-12 19:57:19,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:57:19,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:19,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:57:19,606 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:20,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,195 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,196 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,230 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-08-12 19:57:20,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37
[2021-08-12 19:57:20,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,243 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,244 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,244 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,271 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-08-12 19:57:20,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34
[2021-08-12 19:57:20,277 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,285 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,307 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size
[2021-08-12 19:57:20,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25
[2021-08-12 19:57:20,309 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,315 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,315 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,316 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,335 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:20,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 45
[2021-08-12 19:57:20,368 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,375 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,375 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,376 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,394 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size
[2021-08-12 19:57:20,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25
[2021-08-12 19:57:20,396 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,402 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,403 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,403 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,413 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-08-12 19:57:20,414 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,422 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,422 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,432 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 19:57:20,433 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,439 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,440 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,440 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,458 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size
[2021-08-12 19:57:20,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30
[2021-08-12 19:57:20,460 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,469 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,470 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,471 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,485 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-08-12 19:57:20,486 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,494 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,495 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,496 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,508 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-08-12 19:57:20,509 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,517 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,518 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,519 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,545 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-08-12 19:57:20,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34
[2021-08-12 19:57:20,551 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,560 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,561 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,562 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,574 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 1
[2021-08-12 19:57:20,575 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,583 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,584 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,597 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-08-12 19:57:20,598 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,605 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,607 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,620 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1
[2021-08-12 19:57:20,621 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,629 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,630 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,631 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,643 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-08-12 19:57:20,644 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,651 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,652 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:20,658 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-08-12 19:57:20,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1
[2021-08-12 19:57:20,659 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:20,808 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28
[2021-08-12 19:57:20,809 INFO L628 ElimStorePlain]: treesize reduction 66, result has 65.3 percent of original size
[2021-08-12 19:57:20,811 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:57:20,811 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133
[2021-08-12 19:57:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:20,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216366792] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:20,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:20,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19
[2021-08-12 19:57:20,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133074384]
[2021-08-12 19:57:20,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:57:20,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:57:20,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:57:20,963 INFO L87 Difference]: Start difference. First operand 1398 states and 4657 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:21,391 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57
[2021-08-12 19:57:21,570 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73
[2021-08-12 19:57:21,706 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69
[2021-08-12 19:57:22,086 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58
[2021-08-12 19:57:22,266 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70
[2021-08-12 19:57:22,939 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69
[2021-08-12 19:57:23,545 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70
[2021-08-12 19:57:24,021 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55
[2021-08-12 19:57:24,250 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60
[2021-08-12 19:57:24,896 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49
[2021-08-12 19:57:25,502 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48
[2021-08-12 19:57:25,639 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43
[2021-08-12 19:57:25,906 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50
[2021-08-12 19:57:26,588 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42
[2021-08-12 19:57:29,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:29,013 INFO L93 Difference]: Finished difference Result 3196 states and 9886 transitions.
[2021-08-12 19:57:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-08-12 19:57:29,013 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:57:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:29,019 INFO L225 Difference]: With dead ends: 3196
[2021-08-12 19:57:29,019 INFO L226 Difference]: Without dead ends: 3134
[2021-08-12 19:57:29,020 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4811.9ms TimeCoverageRelationStatistics Valid=743, Invalid=3039, Unknown=0, NotChecked=0, Total=3782
[2021-08-12 19:57:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states.
[2021-08-12 19:57:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1411.
[2021-08-12 19:57:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.3453900709219857) internal successors, (4717), 1410 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4717 transitions.
[2021-08-12 19:57:29,403 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4717 transitions. Word has length 26
[2021-08-12 19:57:29,403 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:29,403 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4717 transitions.
[2021-08-12 19:57:29,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4717 transitions.
[2021-08-12 19:57:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:29,405 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:29,405 INFO L550 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]
[2021-08-12 19:57:29,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable891
[2021-08-12 19:57:29,606 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1882815202, now seen corresponding path program 13 times
[2021-08-12 19:57:29,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:29,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124352307]
[2021-08-12 19:57:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:30,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:30,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124352307]
[2021-08-12 19:57:30,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124352307] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:30,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54481529]
[2021-08-12 19:57:30,001 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
[2021-08-12 19:57:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:30,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:57:30,029 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:30,436 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,436 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,438 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 19:57:30,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,444 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,445 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:57:30,446 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,451 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,451 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,453 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:57:30,454 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,459 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,460 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:57:30,462 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,466 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,468 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:57:30,469 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,473 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,475 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:57:30,477 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,482 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,483 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:57:30,490 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,495 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,496 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,497 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:57:30,499 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,503 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,504 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,505 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:57:30,506 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,511 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,512 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,513 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:57:30,514 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,519 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,521 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:57:30,522 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,526 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,527 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:57:30,530 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,534 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,535 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,536 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:57:30,537 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,542 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,543 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:57:30,544 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,548 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:30,548 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:30,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:57:30,550 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:30,650 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 19:57:30,652 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:57:30,652 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 19:57:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:30,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54481529] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:30,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:30,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-08-12 19:57:30,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333970060]
[2021-08-12 19:57:30,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:57:30,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:30,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:57:30,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:57:30,727 INFO L87 Difference]: Start difference. First operand 1411 states and 4717 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:32,105 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50
[2021-08-12 19:57:32,661 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 57
[2021-08-12 19:57:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:34,191 INFO L93 Difference]: Finished difference Result 1960 states and 6370 transitions.
[2021-08-12 19:57:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:57:34,191 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:57:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:34,195 INFO L225 Difference]: With dead ends: 1960
[2021-08-12 19:57:34,195 INFO L226 Difference]: Without dead ends: 1943
[2021-08-12 19:57:34,195 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1930.5ms TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260
[2021-08-12 19:57:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states.
[2021-08-12 19:57:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1455.
[2021-08-12 19:57:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.343878954607978) internal successors, (4862), 1454 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4862 transitions.
[2021-08-12 19:57:34,587 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4862 transitions. Word has length 26
[2021-08-12 19:57:34,587 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:34,587 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4862 transitions.
[2021-08-12 19:57:34,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4862 transitions.
[2021-08-12 19:57:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:34,589 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:34,589 INFO L550 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]
[2021-08-12 19:57:34,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable996
[2021-08-12 19:57:34,790 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 950706158, now seen corresponding path program 14 times
[2021-08-12 19:57:34,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:34,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102112432]
[2021-08-12 19:57:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:35,076 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33
[2021-08-12 19:57:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:35,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:35,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102112432]
[2021-08-12 19:57:35,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102112432] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:35,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432551358]
[2021-08-12 19:57:35,221 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
[2021-08-12 19:57:35,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:57:35,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 19:57:35,248 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:35,591 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 47
[2021-08-12 19:57:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:35,689 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-08-12 19:57:35,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33
[2021-08-12 19:57:35,693 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:35,835 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 141
[2021-08-12 19:57:35,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:35,843 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:35,858 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size
[2021-08-12 19:57:35,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29
[2021-08-12 19:57:35,860 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:35,998 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 135
[2021-08-12 19:57:35,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:36,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34
[2021-08-12 19:57:36,024 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:36,159 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 125
[2021-08-12 19:57:36,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,167 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:36,181 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size
[2021-08-12 19:57:36,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 30
[2021-08-12 19:57:36,182 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:36,311 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 120
[2021-08-12 19:57:36,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,319 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:36,334 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-08-12 19:57:36,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34
[2021-08-12 19:57:36,338 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:36,462 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112
[2021-08-12 19:57:36,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,470 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:36,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 41
[2021-08-12 19:57:36,483 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:36,613 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 108
[2021-08-12 19:57:36,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,619 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:36,636 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-08-12 19:57:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36
[2021-08-12 19:57:36,638 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:36,765 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2021-08-12 19:57:36,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:36,783 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 41
[2021-08-12 19:57:36,786 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:36,921 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2021-08-12 19:57:36,922 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:36,936 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:57:36,936 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:445, output treesize:479
[2021-08-12 19:57:37,220 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54
[2021-08-12 19:57:37,437 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36
[2021-08-12 19:57:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:37,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432551358] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:37,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:37,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 19:57:37,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139476689]
[2021-08-12 19:57:37,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:57:37,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:37,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:57:37,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:57:37,531 INFO L87 Difference]: Start difference. First operand 1455 states and 4862 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:38,431 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36
[2021-08-12 19:57:38,961 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 44
[2021-08-12 19:57:39,580 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 50
[2021-08-12 19:57:40,184 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75
[2021-08-12 19:57:40,576 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 56
[2021-08-12 19:57:40,871 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47
[2021-08-12 19:57:41,486 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78
[2021-08-12 19:57:41,861 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48
[2021-08-12 19:57:42,154 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41
[2021-08-12 19:57:42,912 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70
[2021-08-12 19:57:43,153 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33
[2021-08-12 19:57:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:44,156 INFO L93 Difference]: Finished difference Result 2083 states and 6661 transitions.
[2021-08-12 19:57:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-08-12 19:57:44,157 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:57:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:44,161 INFO L225 Difference]: With dead ends: 2083
[2021-08-12 19:57:44,161 INFO L226 Difference]: Without dead ends: 2051
[2021-08-12 19:57:44,161 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4986.4ms TimeCoverageRelationStatistics Valid=271, Invalid=1621, Unknown=0, NotChecked=0, Total=1892
[2021-08-12 19:57:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states.
[2021-08-12 19:57:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1451.
[2021-08-12 19:57:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.3393103448275863) internal successors, (4842), 1450 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4842 transitions.
[2021-08-12 19:57:44,599 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4842 transitions. Word has length 26
[2021-08-12 19:57:44,599 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:44,599 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4842 transitions.
[2021-08-12 19:57:44,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4842 transitions.
[2021-08-12 19:57:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:44,603 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:44,603 INFO L550 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]
[2021-08-12 19:57:44,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1028,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:57:44,817 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1764992822, now seen corresponding path program 15 times
[2021-08-12 19:57:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:44,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663320122]
[2021-08-12 19:57:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:45,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:45,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663320122]
[2021-08-12 19:57:45,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663320122] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:45,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542400716]
[2021-08-12 19:57:45,195 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
[2021-08-12 19:57:45,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:57:45,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:45,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:57:45,222 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:45,582 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:57:45,583 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,598 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:45,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 19:57:45,600 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,620 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:57:45,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28
[2021-08-12 19:57:45,624 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,638 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:57:45,639 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,650 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:57:45,651 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,668 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:45,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 19:57:45,670 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,680 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:57:45,681 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,705 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:57:45,706 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,724 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:57:45,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:57:45,726 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:45,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 19:57:45,747 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,757 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:57:45,758 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,778 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:57:45,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 19:57:45,782 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,799 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:57:45,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:57:45,801 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,811 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:57:45,811 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,830 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:57:45,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 19:57:45,832 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,838 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 19:57:45,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:57:45,839 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:45,955 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 41
[2021-08-12 19:57:45,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:45,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:57:45,969 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:769, output treesize:376
[2021-08-12 19:57:46,277 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40
[2021-08-12 19:57:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:46,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542400716] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:46,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:46,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19
[2021-08-12 19:57:46,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488903385]
[2021-08-12 19:57:46,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:57:46,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:57:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:57:46,400 INFO L87 Difference]: Start difference. First operand 1451 states and 4842 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:47,019 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45
[2021-08-12 19:57:47,535 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56
[2021-08-12 19:57:47,669 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45
[2021-08-12 19:57:47,855 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66
[2021-08-12 19:57:48,240 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67
[2021-08-12 19:57:48,709 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58
[2021-08-12 19:57:49,970 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33
[2021-08-12 19:57:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:51,092 INFO L93 Difference]: Finished difference Result 2002 states and 6460 transitions.
[2021-08-12 19:57:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-08-12 19:57:51,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:57:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:51,096 INFO L225 Difference]: With dead ends: 2002
[2021-08-12 19:57:51,096 INFO L226 Difference]: Without dead ends: 1985
[2021-08-12 19:57:51,097 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2979.1ms TimeCoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560
[2021-08-12 19:57:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states.
[2021-08-12 19:57:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1452.
[2021-08-12 19:57:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.3418332184700206) internal successors, (4849), 1451 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4849 transitions.
[2021-08-12 19:57:51,518 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4849 transitions. Word has length 26
[2021-08-12 19:57:51,518 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:51,518 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4849 transitions.
[2021-08-12 19:57:51,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4849 transitions.
[2021-08-12 19:57:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:51,520 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:51,520 INFO L550 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]
[2021-08-12 19:57:51,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1054,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:57:51,721 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 505986546, now seen corresponding path program 16 times
[2021-08-12 19:57:51,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:51,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143934622]
[2021-08-12 19:57:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:52,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:52,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143934622]
[2021-08-12 19:57:52,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143934622] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:52,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954092148]
[2021-08-12 19:57:52,183 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 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
[2021-08-12 19:57:52,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:57:52,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:52,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:57:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:52,500 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,501 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,502 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,505 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,509 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:52,510 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,516 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,517 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,520 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:52,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27
[2021-08-12 19:57:52,528 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,534 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,536 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,539 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:52,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24
[2021-08-12 19:57:52,551 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,557 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,558 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,558 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,561 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,564 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:52,565 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,569 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,570 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,571 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,574 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,580 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:57:52,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17
[2021-08-12 19:57:52,581 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,586 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,587 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,590 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,593 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:52,593 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,601 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,602 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,603 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,604 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,606 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,612 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:52,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18
[2021-08-12 19:57:52,615 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,620 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,621 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,622 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,624 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,627 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:52,628 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,631 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,632 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,633 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,635 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,638 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:52,639 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,645 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,645 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,648 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,654 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:52,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24
[2021-08-12 19:57:52,656 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,662 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,664 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,670 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:57:52,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 20
[2021-08-12 19:57:52,672 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,677 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,678 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,680 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,687 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:57:52,688 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,692 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,692 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,693 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,694 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,701 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,707 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:57:52,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17
[2021-08-12 19:57:52,709 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,715 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,718 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:52,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27
[2021-08-12 19:57:52,726 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,731 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,734 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,736 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22
[2021-08-12 19:57:52,739 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,745 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:57:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:57:52,747 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:57:52,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:57:52,748 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:57:52,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:57:52,827 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:57:52,827 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181
[2021-08-12 19:57:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:53,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954092148] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:53,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:57:53,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-08-12 19:57:53,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767914648]
[2021-08-12 19:57:53,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:57:53,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:57:53,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:57:53,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:57:53,044 INFO L87 Difference]: Start difference. First operand 1452 states and 4849 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:53,872 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42
[2021-08-12 19:57:54,279 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62
[2021-08-12 19:57:54,558 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46
[2021-08-12 19:57:54,733 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56
[2021-08-12 19:57:55,078 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55
[2021-08-12 19:57:55,293 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52
[2021-08-12 19:57:55,734 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51
[2021-08-12 19:57:56,092 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41
[2021-08-12 19:57:56,795 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51
[2021-08-12 19:57:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:57:58,483 INFO L93 Difference]: Finished difference Result 2357 states and 7544 transitions.
[2021-08-12 19:57:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-08-12 19:57:58,484 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:57:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:57:58,488 INFO L225 Difference]: With dead ends: 2357
[2021-08-12 19:57:58,488 INFO L226 Difference]: Without dead ends: 2325
[2021-08-12 19:57:58,489 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 3251.1ms TimeCoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560
[2021-08-12 19:57:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states.
[2021-08-12 19:57:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1465.
[2021-08-12 19:57:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions.
[2021-08-12 19:57:58,910 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26
[2021-08-12 19:57:58,910 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:57:58,910 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions.
[2021-08-12 19:57:58,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:57:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions.
[2021-08-12 19:57:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:57:58,912 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:57:58,912 INFO L550 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]
[2021-08-12 19:57:59,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1107,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:57:59,113 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:57:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:57:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1484642536, now seen corresponding path program 17 times
[2021-08-12 19:57:59,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:57:59,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231549184]
[2021-08-12 19:57:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:57:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:57:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:57:59,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:57:59,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231549184]
[2021-08-12 19:57:59,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231549184] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:57:59,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194001073]
[2021-08-12 19:57:59,446 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
[2021-08-12 19:57:59,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:57:59,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:57:59,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:57:59,507 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:57:59,896 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 45
[2021-08-12 19:58:00,070 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49
[2021-08-12 19:58:00,154 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_46], 2=[A, v_prenex_45]}
[2021-08-12 19:58:00,158 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:00,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:58:00,159 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:00,268 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46
[2021-08-12 19:58:00,268 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size
[2021-08-12 19:58:00,272 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:00,272 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:00,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:00,273 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:00,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:00,321 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:00,321 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:00,323 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:00,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:00,325 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:00,328 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:00,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:58:00,329 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:00,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:00,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:58:00,369 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51
[2021-08-12 19:58:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:00,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194001073] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:00,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:00,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 19:58:00,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825625729]
[2021-08-12 19:58:00,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:58:00,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:58:00,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:58:00,427 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:01,593 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50
[2021-08-12 19:58:02,109 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2021-08-12 19:58:02,687 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62
[2021-08-12 19:58:02,902 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54
[2021-08-12 19:58:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:04,506 INFO L93 Difference]: Finished difference Result 2030 states and 6592 transitions.
[2021-08-12 19:58:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-08-12 19:58:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:58:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:04,511 INFO L225 Difference]: With dead ends: 2030
[2021-08-12 19:58:04,511 INFO L226 Difference]: Without dead ends: 1998
[2021-08-12 19:58:04,511 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2501.9ms TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406
[2021-08-12 19:58:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states.
[2021-08-12 19:58:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1468.
[2021-08-12 19:58:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3503749147920927) internal successors, (4915), 1467 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4915 transitions.
[2021-08-12 19:58:04,953 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4915 transitions. Word has length 26
[2021-08-12 19:58:04,953 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:04,953 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4915 transitions.
[2021-08-12 19:58:04,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4915 transitions.
[2021-08-12 19:58:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:04,955 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:04,955 INFO L550 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]
[2021-08-12 19:58:05,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1132
[2021-08-12 19:58:05,156 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:05,156 INFO L82 PathProgramCache]: Analyzing trace with hash -808425550, now seen corresponding path program 18 times
[2021-08-12 19:58:05,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:05,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568838699]
[2021-08-12 19:58:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:05,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:05,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568838699]
[2021-08-12 19:58:05,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568838699] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:05,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379497824]
[2021-08-12 19:58:05,537 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 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
[2021-08-12 19:58:05,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:58:05,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:05,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:58:05,564 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:05,875 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 48
[2021-08-12 19:58:06,064 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_54, v_prenex_64, v_prenex_58], 6=[A, v_prenex_60, v_prenex_62, v_prenex_56, v_prenex_66]}
[2021-08-12 19:58:06,075 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,086 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:06,089 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:06,474 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 130
[2021-08-12 19:58:06,474 INFO L628 ElimStorePlain]: treesize reduction 272, result has 55.1 percent of original size
[2021-08-12 19:58:06,481 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:58:06,489 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:06,616 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 125
[2021-08-12 19:58:06,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:06,631 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:06,752 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 119
[2021-08-12 19:58:06,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,758 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,759 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,766 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 19:58:06,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19
[2021-08-12 19:58:06,768 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:06,886 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 114
[2021-08-12 19:58:06,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:06,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:06,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20
[2021-08-12 19:58:06,906 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:07,025 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2021-08-12 19:58:07,025 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:07,030 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:07,032 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:07,038 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 19:58:07,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22
[2021-08-12 19:58:07,039 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:07,145 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2021-08-12 19:58:07,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:07,152 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:07,159 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:07,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 19:58:07,179 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:07,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:07,290 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 19:58:07,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19
[2021-08-12 19:58:07,291 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:07,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:07,394 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:58:07,394 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:621, output treesize:217
[2021-08-12 19:58:07,570 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44
[2021-08-12 19:58:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:07,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379497824] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:07,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:07,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:58:07,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166119789]
[2021-08-12 19:58:07,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:58:07,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:58:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:58:07,666 INFO L87 Difference]: Start difference. First operand 1468 states and 4915 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:08,342 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39
[2021-08-12 19:58:09,238 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 52
[2021-08-12 19:58:09,925 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56
[2021-08-12 19:58:10,297 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59
[2021-08-12 19:58:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:11,917 INFO L93 Difference]: Finished difference Result 1974 states and 6442 transitions.
[2021-08-12 19:58:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:58:11,917 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:58:11,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:11,921 INFO L225 Difference]: With dead ends: 1974
[2021-08-12 19:58:11,921 INFO L226 Difference]: Without dead ends: 1957
[2021-08-12 19:58:11,922 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2724.5ms TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056
[2021-08-12 19:58:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states.
[2021-08-12 19:58:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1465.
[2021-08-12 19:58:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions.
[2021-08-12 19:58:12,383 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26
[2021-08-12 19:58:12,383 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:12,383 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions.
[2021-08-12 19:58:12,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions.
[2021-08-12 19:58:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:12,385 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:12,385 INFO L550 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]
[2021-08-12 19:58:12,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1142,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:58:12,586 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:12,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2091148486, now seen corresponding path program 19 times
[2021-08-12 19:58:12,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:12,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942765807]
[2021-08-12 19:58:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:13,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:13,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942765807]
[2021-08-12 19:58:13,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942765807] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:13,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928184730]
[2021-08-12 19:58:13,091 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
[2021-08-12 19:58:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:13,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:58:13,117 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,484 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,486 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:13,488 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,491 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,492 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,494 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:58:13,495 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,498 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,500 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:13,502 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,505 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,506 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,507 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:58:13,508 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,512 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,514 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:58:13,515 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,519 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,520 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:58:13,522 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,526 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,526 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:58:13,529 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,532 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,533 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,534 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:13,535 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,539 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,539 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,541 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:13,542 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,545 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,545 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,547 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:13,548 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,551 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,551 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,553 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 19:58:13,554 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,559 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,559 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,561 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:58:13,562 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,565 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,565 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,567 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:13,568 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,572 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,573 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:13,575 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,578 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:13,579 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:13,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:13,580 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:13,657 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 19:58:13,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:58:13,659 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 19:58:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:13,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928184730] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:13,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:13,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:58:13,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651619493]
[2021-08-12 19:58:13,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:58:13,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:13,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:58:13,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:58:13,712 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:16,263 INFO L93 Difference]: Finished difference Result 1918 states and 6263 transitions.
[2021-08-12 19:58:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-08-12 19:58:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:58:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:16,268 INFO L225 Difference]: With dead ends: 1918
[2021-08-12 19:58:16,268 INFO L226 Difference]: Without dead ends: 1895
[2021-08-12 19:58:16,268 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1230.7ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812
[2021-08-12 19:58:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states.
[2021-08-12 19:58:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1506.
[2021-08-12 19:58:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.345514950166113) internal successors, (5035), 1505 states have internal predecessors, (5035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5035 transitions.
[2021-08-12 19:58:16,712 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5035 transitions. Word has length 26
[2021-08-12 19:58:16,712 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:16,712 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5035 transitions.
[2021-08-12 19:58:16,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5035 transitions.
[2021-08-12 19:58:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:16,714 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:16,714 INFO L550 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]
[2021-08-12 19:58:16,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1167
[2021-08-12 19:58:16,915 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:16,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2036009718, now seen corresponding path program 20 times
[2021-08-12 19:58:16,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:16,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980804497]
[2021-08-12 19:58:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:17,103 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42
[2021-08-12 19:58:17,236 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35
[2021-08-12 19:58:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:17,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:17,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980804497]
[2021-08-12 19:58:17,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980804497] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:17,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032676047]
[2021-08-12 19:58:17,465 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
[2021-08-12 19:58:17,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:58:17,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:17,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:58:17,492 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:18,128 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-08-12 19:58:18,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36
[2021-08-12 19:58:18,135 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:18,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:18,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43
[2021-08-12 19:58:18,158 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:18,645 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81
[2021-08-12 19:58:18,646 INFO L628 ElimStorePlain]: treesize reduction 17, result has 95.3 percent of original size
[2021-08-12 19:58:18,667 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:18,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34
[2021-08-12 19:58:18,674 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:18,698 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-08-12 19:58:18,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29
[2021-08-12 19:58:18,702 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:18,845 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 74
[2021-08-12 19:58:18,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:18,872 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-08-12 19:58:18,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32
[2021-08-12 19:58:18,874 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:18,898 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-08-12 19:58:18,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29
[2021-08-12 19:58:18,901 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:19,044 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 69
[2021-08-12 19:58:19,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:19,068 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2021-08-12 19:58:19,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28
[2021-08-12 19:58:19,070 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:19,096 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-08-12 19:58:19,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39
[2021-08-12 19:58:19,097 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:19,239 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 67
[2021-08-12 19:58:19,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:19,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:58:19,276 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:365, output treesize:746
[2021-08-12 19:58:19,735 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79
[2021-08-12 19:58:20,032 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56
[2021-08-12 19:58:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:20,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032676047] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:20,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:20,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20
[2021-08-12 19:58:20,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774238198]
[2021-08-12 19:58:20,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:58:20,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:58:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:58:20,172 INFO L87 Difference]: Start difference. First operand 1506 states and 5035 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:20,350 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 21
[2021-08-12 19:58:20,510 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27
[2021-08-12 19:58:20,890 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 47
[2021-08-12 19:58:21,217 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 51
[2021-08-12 19:58:21,602 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 50
[2021-08-12 19:58:21,940 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 41
[2021-08-12 19:58:22,184 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 81
[2021-08-12 19:58:22,807 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83
[2021-08-12 19:58:22,956 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40
[2021-08-12 19:58:23,385 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 53
[2021-08-12 19:58:23,753 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53
[2021-08-12 19:58:24,264 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 61
[2021-08-12 19:58:24,858 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61
[2021-08-12 19:58:25,462 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103
[2021-08-12 19:58:26,373 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44
[2021-08-12 19:58:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:27,608 INFO L93 Difference]: Finished difference Result 2135 states and 6816 transitions.
[2021-08-12 19:58:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-08-12 19:58:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:58:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:27,613 INFO L225 Difference]: With dead ends: 2135
[2021-08-12 19:58:27,613 INFO L226 Difference]: Without dead ends: 2108
[2021-08-12 19:58:27,613 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 6395.1ms TimeCoverageRelationStatistics Valid=320, Invalid=1486, Unknown=0, NotChecked=0, Total=1806
[2021-08-12 19:58:27,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states.
[2021-08-12 19:58:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1529.
[2021-08-12 19:58:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 3.352094240837696) internal successors, (5122), 1528 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5122 transitions.
[2021-08-12 19:58:28,082 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5122 transitions. Word has length 26
[2021-08-12 19:58:28,082 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:28,082 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5122 transitions.
[2021-08-12 19:58:28,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5122 transitions.
[2021-08-12 19:58:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:28,085 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:28,085 INFO L550 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]
[2021-08-12 19:58:28,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1199
[2021-08-12 19:58:28,287 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:28,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2016041692, now seen corresponding path program 21 times
[2021-08-12 19:58:28,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:28,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087022213]
[2021-08-12 19:58:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:28,492 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46
[2021-08-12 19:58:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:28,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:28,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087022213]
[2021-08-12 19:58:28,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087022213] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:28,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333022871]
[2021-08-12 19:58:28,774 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
[2021-08-12 19:58:28,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:58:28,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:28,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:58:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:29,104 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,111 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:58:29,112 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,117 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,121 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:58:29,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,126 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:29,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 19:58:29,137 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,141 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,148 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:29,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:58:29,152 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,157 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,161 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:58:29,162 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,166 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,171 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:29,172 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,175 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,183 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:58:29,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:58:29,185 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,189 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,194 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:29,195 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,199 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,206 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:29,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:58:29,208 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,212 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,219 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:29,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:29,222 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,226 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,231 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:58:29,231 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,235 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,243 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:58:29,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 19:58:29,244 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,248 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,255 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:58:29,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:58:29,257 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,266 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:29,267 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,275 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:29,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:29,276 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,281 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:29,287 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:29,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:29,289 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:29,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:29,379 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:58:29,380 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174
[2021-08-12 19:58:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:29,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333022871] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:29,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:29,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19
[2021-08-12 19:58:29,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233326827]
[2021-08-12 19:58:29,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:58:29,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:58:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:58:29,628 INFO L87 Difference]: Start difference. First operand 1529 states and 5122 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:30,785 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57
[2021-08-12 19:58:31,101 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52
[2021-08-12 19:58:31,651 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43
[2021-08-12 19:58:32,118 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30
[2021-08-12 19:58:32,419 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52
[2021-08-12 19:58:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:33,548 INFO L93 Difference]: Finished difference Result 2013 states and 6584 transitions.
[2021-08-12 19:58:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:58:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:58:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:33,552 INFO L225 Difference]: With dead ends: 2013
[2021-08-12 19:58:33,552 INFO L226 Difference]: Without dead ends: 1982
[2021-08-12 19:58:33,553 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2316.2ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122
[2021-08-12 19:58:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states.
[2021-08-12 19:58:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1532.
[2021-08-12 19:58:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3527106466361856) internal successors, (5133), 1531 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5133 transitions.
[2021-08-12 19:58:34,023 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5133 transitions. Word has length 26
[2021-08-12 19:58:34,024 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:34,024 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5133 transitions.
[2021-08-12 19:58:34,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5133 transitions.
[2021-08-12 19:58:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:34,027 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:34,027 INFO L550 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]
[2021-08-12 19:58:34,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1279
[2021-08-12 19:58:34,229 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1960184130, now seen corresponding path program 22 times
[2021-08-12 19:58:34,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:34,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674714251]
[2021-08-12 19:58:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:34,522 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35
[2021-08-12 19:58:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:34,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:34,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674714251]
[2021-08-12 19:58:34,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674714251] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:34,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454278607]
[2021-08-12 19:58:34,690 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
[2021-08-12 19:58:34,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:58:34,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:34,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:58:34,717 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:35,029 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37
[2021-08-12 19:58:35,106 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:35,106 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:35,107 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:35,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:58:35,108 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:35,112 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:35,113 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:35,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 19:58:35,114 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:35,225 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45
[2021-08-12 19:58:35,226 INFO L628 ElimStorePlain]: treesize reduction 91, result has 58.6 percent of original size
[2021-08-12 19:58:35,229 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:35,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 19:58:35,237 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:35,282 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:35,283 INFO L518 ElimStorePlain]: Eliminatee v_prenex_87 vanished before elimination
[2021-08-12 19:58:35,292 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:35,293 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:35,294 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:35,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:35,296 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:35,300 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:35,301 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:35,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:35,302 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:35,346 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:35,348 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:58:35,349 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:272, output treesize:51
[2021-08-12 19:58:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:35,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454278607] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:35,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:35,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-08-12 19:58:35,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878623807]
[2021-08-12 19:58:35,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-08-12 19:58:35,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:35,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-08-12 19:58:35,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2021-08-12 19:58:35,421 INFO L87 Difference]: Start difference. First operand 1532 states and 5133 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:37,247 INFO L93 Difference]: Finished difference Result 1609 states and 5326 transitions.
[2021-08-12 19:58:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-08-12 19:58:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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
[2021-08-12 19:58:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:37,251 INFO L225 Difference]: With dead ends: 1609
[2021-08-12 19:58:37,251 INFO L226 Difference]: Without dead ends: 1592
[2021-08-12 19:58:37,252 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 789.6ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:58:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states.
[2021-08-12 19:58:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1538.
[2021-08-12 19:58:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 3.3545868575146387) internal successors, (5156), 1537 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 5156 transitions.
[2021-08-12 19:58:37,821 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 5156 transitions. Word has length 26
[2021-08-12 19:58:37,821 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:37,821 INFO L482 AbstractCegarLoop]: Abstraction has 1538 states and 5156 transitions.
[2021-08-12 19:58:37,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 5156 transitions.
[2021-08-12 19:58:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:37,823 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:37,823 INFO L550 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]
[2021-08-12 19:58:38,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1320,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:58:38,024 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:38,024 INFO L82 PathProgramCache]: Analyzing trace with hash -389358530, now seen corresponding path program 23 times
[2021-08-12 19:58:38,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:38,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631925889]
[2021-08-12 19:58:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:38,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:38,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631925889]
[2021-08-12 19:58:38,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631925889] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:38,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720588179]
[2021-08-12 19:58:38,403 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
[2021-08-12 19:58:38,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:58:38,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:38,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-08-12 19:58:38,430 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:38,867 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:38,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:38,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 19:58:38,889 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:38,914 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:58:38,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:58:38,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,113 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2021-08-12 19:58:39,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:39,137 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:58:39,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 19:58:39,139 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,145 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:39,159 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:58:39,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 19:58:39,162 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,305 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2021-08-12 19:58:39,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:39,311 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:39,323 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:39,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 19:58:39,327 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:39,346 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:58:39,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31
[2021-08-12 19:58:39,348 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,617 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64
[2021-08-12 19:58:39,617 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size
[2021-08-12 19:58:39,623 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:39,634 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:39,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32
[2021-08-12 19:58:39,641 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:39,656 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:58:39,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:58:39,658 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:39,905 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55
[2021-08-12 19:58:39,905 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.5 percent of original size
[2021-08-12 19:58:39,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:58:39,938 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:259
[2021-08-12 19:58:40,142 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41
[2021-08-12 19:58:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:40,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720588179] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:40,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:40,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 19:58:40,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550953642]
[2021-08-12 19:58:40,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:58:40,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:40,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:58:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:58:40,248 INFO L87 Difference]: Start difference. First operand 1538 states and 5156 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:41,156 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65
[2021-08-12 19:58:42,911 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38
[2021-08-12 19:58:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:44,198 INFO L93 Difference]: Finished difference Result 2229 states and 7225 transitions.
[2021-08-12 19:58:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 19:58:44,198 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:58:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:44,203 INFO L225 Difference]: With dead ends: 2229
[2021-08-12 19:58:44,203 INFO L226 Difference]: Without dead ends: 2177
[2021-08-12 19:58:44,203 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2005.5ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260
[2021-08-12 19:58:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states.
[2021-08-12 19:58:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1545.
[2021-08-12 19:58:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 3.3588082901554404) internal successors, (5186), 1544 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5186 transitions.
[2021-08-12 19:58:44,679 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5186 transitions. Word has length 26
[2021-08-12 19:58:44,679 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:44,679 INFO L482 AbstractCegarLoop]: Abstraction has 1545 states and 5186 transitions.
[2021-08-12 19:58:44,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5186 transitions.
[2021-08-12 19:58:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:44,681 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:44,681 INFO L550 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]
[2021-08-12 19:58:44,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1331
[2021-08-12 19:58:44,882 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:44,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1800748254, now seen corresponding path program 24 times
[2021-08-12 19:58:44,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:44,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402294035]
[2021-08-12 19:58:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:45,182 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33
[2021-08-12 19:58:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:45,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:45,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402294035]
[2021-08-12 19:58:45,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402294035] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:45,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310918349]
[2021-08-12 19:58:45,461 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
[2021-08-12 19:58:45,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:58:45,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:45,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:58:45,495 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:45,801 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,811 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:58:45,812 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,816 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,822 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:58:45,823 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,827 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:45,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:45,839 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,844 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,853 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:45,854 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,858 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:45,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 19:58:45,871 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,874 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:45,880 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,890 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:45,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:45,892 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,895 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:58:45,901 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,905 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,911 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:45,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:58:45,915 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,919 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:45,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:58:45,928 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,932 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,937 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:58:45,938 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,942 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,947 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:58:45,948 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,958 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:58:45,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:58:45,960 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,963 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,970 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:58:45,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:58:45,972 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,982 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:58:45,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 19:58:45,984 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:45,989 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:58:45,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:58:45,990 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:46,062 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:46,064 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:58:46,064 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-08-12 19:58:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:46,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310918349] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:46,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:46,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-08-12 19:58:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570224413]
[2021-08-12 19:58:46,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:58:46,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:46,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:58:46,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:58:46,254 INFO L87 Difference]: Start difference. First operand 1545 states and 5186 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:46,961 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48
[2021-08-12 19:58:48,218 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42
[2021-08-12 19:58:48,832 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29
[2021-08-12 19:58:49,075 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58
[2021-08-12 19:58:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:50,258 INFO L93 Difference]: Finished difference Result 2073 states and 6814 transitions.
[2021-08-12 19:58:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-08-12 19:58:50,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:58:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:50,263 INFO L225 Difference]: With dead ends: 2073
[2021-08-12 19:58:50,263 INFO L226 Difference]: Without dead ends: 2052
[2021-08-12 19:58:50,264 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2334.9ms TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122
[2021-08-12 19:58:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states.
[2021-08-12 19:58:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1557.
[2021-08-12 19:58:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.3618251928020566) internal successors, (5231), 1556 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 5231 transitions.
[2021-08-12 19:58:50,797 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 5231 transitions. Word has length 26
[2021-08-12 19:58:50,797 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:50,798 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 5231 transitions.
[2021-08-12 19:58:50,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 5231 transitions.
[2021-08-12 19:58:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:50,800 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:50,800 INFO L550 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]
[2021-08-12 19:58:51,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1387
[2021-08-12 19:58:51,000 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1506727430, now seen corresponding path program 25 times
[2021-08-12 19:58:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:51,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021606344]
[2021-08-12 19:58:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:51,366 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49
[2021-08-12 19:58:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:51,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:51,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021606344]
[2021-08-12 19:58:51,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021606344] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:51,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670544333]
[2021-08-12 19:58:51,479 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
[2021-08-12 19:58:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:51,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:58:51,505 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:51,867 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66
[2021-08-12 19:58:51,968 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_98], 3=[A, v_prenex_100], 6=[v_prenex_99]}
[2021-08-12 19:58:51,973 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:51,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:51,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:51,983 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:51,993 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:51,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:58:51,996 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,140 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 86
[2021-08-12 19:58:52,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 19:58:52,156 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,161 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,167 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 19:58:52,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19
[2021-08-12 19:58:52,169 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,305 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 80
[2021-08-12 19:58:52,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,311 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,312 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,319 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 19:58:52,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19
[2021-08-12 19:58:52,321 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,326 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,326 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,331 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20
[2021-08-12 19:58:52,335 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,455 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2021-08-12 19:58:52,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,460 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,461 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,465 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:52,470 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 19:58:52,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22
[2021-08-12 19:58:52,472 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,484 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:52,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 19:58:52,496 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:52,664 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 63
[2021-08-12 19:58:52,665 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:58:52,675 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:58:52,676 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:375, output treesize:228
[2021-08-12 19:58:52,872 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43
[2021-08-12 19:58:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:52,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670544333] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:52,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:52,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 19:58:52,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661638996]
[2021-08-12 19:58:52,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:58:52,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:58:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:58:52,981 INFO L87 Difference]: Start difference. First operand 1557 states and 5231 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:53,119 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 28
[2021-08-12 19:58:53,517 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33
[2021-08-12 19:58:53,811 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58
[2021-08-12 19:58:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:58:56,281 INFO L93 Difference]: Finished difference Result 2054 states and 6753 transitions.
[2021-08-12 19:58:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-08-12 19:58:56,281 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:58:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:58:56,285 INFO L225 Difference]: With dead ends: 2054
[2021-08-12 19:58:56,285 INFO L226 Difference]: Without dead ends: 2027
[2021-08-12 19:58:56,286 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1921.3ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812
[2021-08-12 19:58:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states.
[2021-08-12 19:58:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1563.
[2021-08-12 19:58:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.360435339308579) internal successors, (5249), 1562 states have internal predecessors, (5249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 5249 transitions.
[2021-08-12 19:58:56,795 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 5249 transitions. Word has length 26
[2021-08-12 19:58:56,795 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:58:56,795 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 5249 transitions.
[2021-08-12 19:58:56,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:58:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 5249 transitions.
[2021-08-12 19:58:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:58:56,797 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:58:56,797 INFO L550 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]
[2021-08-12 19:58:56,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1404
[2021-08-12 19:58:56,998 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:58:56,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:58:56,998 INFO L82 PathProgramCache]: Analyzing trace with hash -132958662, now seen corresponding path program 42 times
[2021-08-12 19:58:56,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:58:56,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911560104]
[2021-08-12 19:58:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:58:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:58:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:57,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:58:57,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911560104]
[2021-08-12 19:58:57,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911560104] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:57,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454377440]
[2021-08-12 19:58:57,506 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 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
[2021-08-12 19:58:57,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 19:58:57,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:58:57,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-08-12 19:58:57,533 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:58:57,841 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,842 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,843 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,843 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,845 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,846 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13
[2021-08-12 19:58:57,848 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,853 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,854 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,854 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,856 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,857 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-08-12 19:58:57,858 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,862 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,862 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,863 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,865 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:58:57,865 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,870 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,870 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,871 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,873 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,873 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-08-12 19:58:57,874 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,878 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,879 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,879 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,880 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,881 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:58:57,882 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,887 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,888 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,890 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,890 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-08-12 19:58:57,891 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,895 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,896 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,897 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,897 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,899 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,899 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-08-12 19:58:57,900 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,904 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,905 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,905 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,906 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,908 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,908 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:58:57,909 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,913 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,914 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,914 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,915 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,917 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,917 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16
[2021-08-12 19:58:57,918 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,922 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,922 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,923 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,924 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,925 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13
[2021-08-12 19:58:57,926 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,929 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,930 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,930 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,931 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,933 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,933 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-08-12 19:58:57,934 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,938 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,940 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,940 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,942 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,942 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16
[2021-08-12 19:58:57,944 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,947 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,948 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,949 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,951 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,952 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-08-12 19:58:57,953 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,957 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,957 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,958 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,959 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,960 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13
[2021-08-12 19:58:57,961 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,965 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,965 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,965 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,967 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,968 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7
[2021-08-12 19:58:57,969 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:58:57,973 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,973 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:58:57,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:58:57,974 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:58:58,011 INFO L628 ElimStorePlain]: treesize reduction 21, result has 65.0 percent of original size
[2021-08-12 19:58:58,012 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:58:58,012 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:809, output treesize:39
[2021-08-12 19:58:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:58:58,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454377440] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:58:58,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:58:58,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19
[2021-08-12 19:58:58,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219212974]
[2021-08-12 19:58:58,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 19:58:58,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:58:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 19:58:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380
[2021-08-12 19:58:58,076 INFO L87 Difference]: Start difference. First operand 1563 states and 5249 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:01,299 INFO L93 Difference]: Finished difference Result 2042 states and 6675 transitions.
[2021-08-12 19:59:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-08-12 19:59:01,299 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:59:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:01,303 INFO L225 Difference]: With dead ends: 2042
[2021-08-12 19:59:01,304 INFO L226 Difference]: Without dead ends: 2014
[2021-08-12 19:59:01,304 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1428.7ms TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190
[2021-08-12 19:59:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states.
[2021-08-12 19:59:01,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1579.
[2021-08-12 19:59:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions.
[2021-08-12 19:59:01,813 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26
[2021-08-12 19:59:01,813 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:01,813 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions.
[2021-08-12 19:59:01,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:01,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions.
[2021-08-12 19:59:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:01,815 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:01,815 INFO L550 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]
[2021-08-12 19:59:02,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1437,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:59:02,016 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:02,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:02,016 INFO L82 PathProgramCache]: Analyzing trace with hash 934915902, now seen corresponding path program 43 times
[2021-08-12 19:59:02,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:02,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532552336]
[2021-08-12 19:59:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:02,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:02,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532552336]
[2021-08-12 19:59:02,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532552336] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:02,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678408814]
[2021-08-12 19:59:02,478 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 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
[2021-08-12 19:59:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:02,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:59:02,504 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:02,836 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_103], 5=[v_prenex_101, v_prenex_105]}
[2021-08-12 19:59:02,841 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:02,842 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:02,842 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:02,844 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:02,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13
[2021-08-12 19:59:02,845 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:02,849 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:02,849 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:02,850 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:02,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:59:02,851 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:02,940 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size
[2021-08-12 19:59:02,941 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination
[2021-08-12 19:59:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:02,944 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:02,944 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:02,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-08-12 19:59:02,946 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:02,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:02,977 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:02,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13
[2021-08-12 19:59:02,978 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:03,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:03,006 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts.
[2021-08-12 19:59:03,006 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:33
[2021-08-12 19:59:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:03,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678408814] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:03,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:03,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-08-12 19:59:03,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058146281]
[2021-08-12 19:59:03,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 19:59:03,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:03,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 19:59:03,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306
[2021-08-12 19:59:03,053 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:08,101 INFO L93 Difference]: Finished difference Result 2241 states and 7312 transitions.
[2021-08-12 19:59:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-08-12 19:59:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:59:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:08,106 INFO L225 Difference]: With dead ends: 2241
[2021-08-12 19:59:08,106 INFO L226 Difference]: Without dead ends: 2224
[2021-08-12 19:59:08,107 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2882.7ms TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756
[2021-08-12 19:59:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states.
[2021-08-12 19:59:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1579.
[2021-08-12 19:59:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions.
[2021-08-12 19:59:08,636 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26
[2021-08-12 19:59:08,636 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:08,636 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions.
[2021-08-12 19:59:08,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions.
[2021-08-12 19:59:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:08,638 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:08,638 INFO L550 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]
[2021-08-12 19:59:08,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1456
[2021-08-12 19:59:08,839 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash 346540478, now seen corresponding path program 26 times
[2021-08-12 19:59:08,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:08,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752211167]
[2021-08-12 19:59:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:09,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:09,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752211167]
[2021-08-12 19:59:09,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752211167] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:09,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063269452]
[2021-08-12 19:59:09,276 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 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
[2021-08-12 19:59:09,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:59:09,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:59:09,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:59:09,303 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:09,562 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,567 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:59:09,567 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,575 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 19:59:09,576 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,579 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:09,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:59:09,589 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,592 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,597 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:59:09,598 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,601 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,608 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:09,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 19:59:09,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,615 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,620 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:59:09,621 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,632 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:09,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 19:59:09,633 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,637 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,642 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 19:59:09,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,653 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:09,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:59:09,658 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,662 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:09,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 19:59:09,670 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,674 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,679 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 19:59:09,680 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,684 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,688 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 19:59:09,689 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,692 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,700 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:59:09,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:59:09,703 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,707 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,714 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:59:09,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 19:59:09,716 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,719 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,727 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 19:59:09,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 19:59:09,728 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,739 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:09,741 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 19:59:09,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 19:59:09,742 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:09,817 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:09,818 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:59:09,818 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-08-12 19:59:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:10,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063269452] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:10,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:10,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-08-12 19:59:10,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099492932]
[2021-08-12 19:59:10,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:59:10,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:10,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:59:10,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:59:10,008 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:12,048 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64
[2021-08-12 19:59:12,565 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43
[2021-08-12 19:59:13,337 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29
[2021-08-12 19:59:13,592 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55
[2021-08-12 19:59:14,325 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45
[2021-08-12 19:59:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:15,209 INFO L93 Difference]: Finished difference Result 2208 states and 7153 transitions.
[2021-08-12 19:59:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-08-12 19:59:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 19:59:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:15,214 INFO L225 Difference]: With dead ends: 2208
[2021-08-12 19:59:15,214 INFO L226 Difference]: Without dead ends: 2187
[2021-08-12 19:59:15,214 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2837.3ms TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640
[2021-08-12 19:59:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states.
[2021-08-12 19:59:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1585.
[2021-08-12 19:59:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions.
[2021-08-12 19:59:15,746 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26
[2021-08-12 19:59:15,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:15,746 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions.
[2021-08-12 19:59:15,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions.
[2021-08-12 19:59:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:15,748 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:15,748 INFO L550 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]
[2021-08-12 19:59:15,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1470,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:59:15,949 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1896922042, now seen corresponding path program 44 times
[2021-08-12 19:59:15,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:15,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730535731]
[2021-08-12 19:59:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:16,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:16,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730535731]
[2021-08-12 19:59:16,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730535731] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:16,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673752971]
[2021-08-12 19:59:16,529 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 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
[2021-08-12 19:59:16,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 19:59:16,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:59:16,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-08-12 19:59:16,556 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:16,920 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38
[2021-08-12 19:59:17,277 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_118, A], 5=[v_prenex_120, v_prenex_116]}
[2021-08-12 19:59:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:17,299 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:59:17,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:59:17,301 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,308 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:17,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:17,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 19:59:17,323 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,488 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 82
[2021-08-12 19:59:17,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:17,494 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:17,513 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:17,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 19:59:17,515 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:17,535 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:17,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 19:59:17,539 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,701 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 77
[2021-08-12 19:59:17,702 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:17,707 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:17,709 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:17,724 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:59:17,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24
[2021-08-12 19:59:17,725 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,730 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:17,740 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:17,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2021-08-12 19:59:17,745 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,888 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2021-08-12 19:59:17,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:17,896 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:17,899 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:17,913 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:17,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28
[2021-08-12 19:59:17,914 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:17,920 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:17,933 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:17,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28
[2021-08-12 19:59:17,935 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:18,062 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 63
[2021-08-12 19:59:18,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:18,075 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:59:18,075 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:393, output treesize:161
[2021-08-12 19:59:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:18,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673752971] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:18,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:18,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 19:59:18,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770162316]
[2021-08-12 19:59:18,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-08-12 19:59:18,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:18,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-08-12 19:59:18,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420
[2021-08-12 19:59:18,228 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 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)
[2021-08-12 19:59:18,939 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43
[2021-08-12 19:59:19,853 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52
[2021-08-12 19:59:21,002 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46
[2021-08-12 19:59:21,740 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61
[2021-08-12 19:59:21,953 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52
[2021-08-12 19:59:23,001 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64
[2021-08-12 19:59:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:25,654 INFO L93 Difference]: Finished difference Result 2575 states and 8162 transitions.
[2021-08-12 19:59:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2021-08-12 19:59:25,655 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 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 26
[2021-08-12 19:59:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:25,660 INFO L225 Difference]: With dead ends: 2575
[2021-08-12 19:59:25,660 INFO L226 Difference]: Without dead ends: 2529
[2021-08-12 19:59:25,661 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 4565.0ms TimeCoverageRelationStatistics Valid=671, Invalid=3361, Unknown=0, NotChecked=0, Total=4032
[2021-08-12 19:59:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states.
[2021-08-12 19:59:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 1585.
[2021-08-12 19:59:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions.
[2021-08-12 19:59:26,226 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26
[2021-08-12 19:59:26,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:26,227 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions.
[2021-08-12 19:59:26,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 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)
[2021-08-12 19:59:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions.
[2021-08-12 19:59:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:26,229 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:26,229 INFO L550 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]
[2021-08-12 19:59:26,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1487
[2021-08-12 19:59:26,429 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash 920603198, now seen corresponding path program 45 times
[2021-08-12 19:59:26,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:26,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575764280]
[2021-08-12 19:59:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:26,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:26,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575764280]
[2021-08-12 19:59:26,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575764280] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:26,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788018427]
[2021-08-12 19:59:26,971 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 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
[2021-08-12 19:59:27,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:59:27,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:59:27,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 19:59:27,004 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:27,634 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,664 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size
[2021-08-12 19:59:27,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33
[2021-08-12 19:59:27,669 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,676 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,679 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,680 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:27,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41
[2021-08-12 19:59:27,718 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,724 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,727 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,727 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,755 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size
[2021-08-12 19:59:27,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 19:59:27,758 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,765 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,796 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size
[2021-08-12 19:59:27,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25
[2021-08-12 19:59:27,798 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,805 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,807 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,808 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,822 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:27,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-08-12 19:59:27,823 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,830 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,832 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,847 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:27,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-08-12 19:59:27,848 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,857 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,858 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,871 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:27,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-08-12 19:59:27,872 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,878 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,881 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,882 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,896 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:27,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-08-12 19:59:27,897 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,903 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,905 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,906 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,929 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size
[2021-08-12 19:59:27,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26
[2021-08-12 19:59:27,931 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,936 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,938 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,938 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,958 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-08-12 19:59:27,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 25
[2021-08-12 19:59:27,960 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,965 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,966 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,967 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,978 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:27,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1
[2021-08-12 19:59:27,979 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:27,984 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,985 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,986 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:27,997 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:27,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-08-12 19:59:27,998 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:28,003 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,004 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,015 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:28,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-08-12 19:59:28,016 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,023 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,033 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:28,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 19:59:28,034 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,041 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,051 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:28,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-08-12 19:59:28,052 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:28,056 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,058 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:28,070 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-08-12 19:59:28,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 25
[2021-08-12 19:59:28,071 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:28,201 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30
[2021-08-12 19:59:28,201 INFO L628 ElimStorePlain]: treesize reduction 79, result has 66.8 percent of original size
[2021-08-12 19:59:28,204 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:59:28,204 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:180
[2021-08-12 19:59:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:28,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788018427] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:28,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:28,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21
[2021-08-12 19:59:28,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274650596]
[2021-08-12 19:59:28,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-08-12 19:59:28,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:28,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-08-12 19:59:28,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420
[2021-08-12 19:59:28,356 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:29,620 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54
[2021-08-12 19:59:30,179 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47
[2021-08-12 19:59:30,302 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55
[2021-08-12 19:59:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:35,251 INFO L93 Difference]: Finished difference Result 3104 states and 9807 transitions.
[2021-08-12 19:59:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-08-12 19:59:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 19:59:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:35,257 INFO L225 Difference]: With dead ends: 3104
[2021-08-12 19:59:35,257 INFO L226 Difference]: Without dead ends: 3072
[2021-08-12 19:59:35,257 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 3297.8ms TimeCoverageRelationStatistics Valid=533, Invalid=3007, Unknown=0, NotChecked=0, Total=3540
[2021-08-12 19:59:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states.
[2021-08-12 19:59:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1645.
[2021-08-12 19:59:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.3619221411192215) internal successors, (5527), 1644 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 5527 transitions.
[2021-08-12 19:59:35,835 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 5527 transitions. Word has length 26
[2021-08-12 19:59:35,836 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:35,836 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 5527 transitions.
[2021-08-12 19:59:35,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 5527 transitions.
[2021-08-12 19:59:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:35,838 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:35,838 INFO L550 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]
[2021-08-12 19:59:36,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1555
[2021-08-12 19:59:36,038 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:36,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2122915566, now seen corresponding path program 46 times
[2021-08-12 19:59:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:36,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625368414]
[2021-08-12 19:59:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:36,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:36,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625368414]
[2021-08-12 19:59:36,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625368414] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:36,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721416272]
[2021-08-12 19:59:36,550 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 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
[2021-08-12 19:59:36,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 19:59:36,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:59:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 19:59:36,576 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,130 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,130 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,132 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,132 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-08-12 19:59:37,134 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,138 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,139 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,139 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,139 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,141 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,142 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 19:59:37,143 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,147 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,147 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,148 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,148 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,150 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,150 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-08-12 19:59:37,152 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,156 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,156 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,157 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,157 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,159 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,159 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:59:37,160 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,164 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,165 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,165 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,166 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,167 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,168 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 19:59:37,169 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,174 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,174 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,176 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,176 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:59:37,177 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,182 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,182 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,183 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,185 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,185 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 19:59:37,186 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,190 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,191 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,191 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 19:59:37,194 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,198 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,198 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,199 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,199 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,201 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,201 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:59:37,202 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,206 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,207 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,207 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,209 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,210 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-08-12 19:59:37,211 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,214 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,215 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,215 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,216 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,217 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,218 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 19:59:37,219 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,222 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,223 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,223 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,224 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,226 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,226 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-08-12 19:59:37,227 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,231 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,231 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,232 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,232 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,234 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,235 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-08-12 19:59:37,236 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,239 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,239 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,240 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,240 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,242 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,242 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 19:59:37,243 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:37,247 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,247 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 19:59:37,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-08-12 19:59:37,248 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:37,273 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size
[2021-08-12 19:59:37,274 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 19:59:37,275 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-08-12 19:59:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:37,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721416272] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:37,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:37,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18
[2021-08-12 19:59:37,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378931508]
[2021-08-12 19:59:37,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:59:37,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:37,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:59:37,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:59:37,296 INFO L87 Difference]: Start difference. First operand 1645 states and 5527 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:39,371 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58
[2021-08-12 19:59:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:43,653 INFO L93 Difference]: Finished difference Result 3255 states and 10421 transitions.
[2021-08-12 19:59:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2021-08-12 19:59:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 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
[2021-08-12 19:59:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:43,660 INFO L225 Difference]: With dead ends: 3255
[2021-08-12 19:59:43,660 INFO L226 Difference]: Without dead ends: 3217
[2021-08-12 19:59:43,660 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2269.8ms TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450
[2021-08-12 19:59:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states.
[2021-08-12 19:59:44,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1763.
[2021-08-12 19:59:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 3.388195232690125) internal successors, (5970), 1762 states have internal predecessors, (5970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5970 transitions.
[2021-08-12 19:59:44,292 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5970 transitions. Word has length 26
[2021-08-12 19:59:44,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:44,293 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 5970 transitions.
[2021-08-12 19:59:44,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5970 transitions.
[2021-08-12 19:59:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:44,295 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:44,295 INFO L550 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]
[2021-08-12 19:59:44,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1661
[2021-08-12 19:59:44,495 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash -338403078, now seen corresponding path program 47 times
[2021-08-12 19:59:44,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:44,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749063135]
[2021-08-12 19:59:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:44,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:44,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749063135]
[2021-08-12 19:59:44,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749063135] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:44,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353960442]
[2021-08-12 19:59:44,978 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 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
[2021-08-12 19:59:45,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 19:59:45,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:59:45,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 19:59:45,005 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:45,456 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,458 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,477 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size
[2021-08-12 19:59:45,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31
[2021-08-12 19:59:45,479 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,485 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,505 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-08-12 19:59:45,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28
[2021-08-12 19:59:45,506 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,512 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,534 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size
[2021-08-12 19:59:45,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35
[2021-08-12 19:59:45,540 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,575 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size
[2021-08-12 19:59:45,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28
[2021-08-12 19:59:45,578 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,586 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,588 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,606 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size
[2021-08-12 19:59:45,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25
[2021-08-12 19:59:45,607 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,614 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,624 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:45,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-08-12 19:59:45,625 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,630 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,632 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,652 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size
[2021-08-12 19:59:45,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30
[2021-08-12 19:59:45,656 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,661 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,663 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,681 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size
[2021-08-12 19:59:45,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 19:59:45,683 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,688 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,689 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:45,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41
[2021-08-12 19:59:45,714 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,720 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,721 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,741 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size
[2021-08-12 19:59:45,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2021-08-12 19:59:45,746 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,764 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,766 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,783 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size
[2021-08-12 19:59:45,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 25
[2021-08-12 19:59:45,784 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,790 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,791 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,800 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:45,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1
[2021-08-12 19:59:45,801 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,806 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,808 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,817 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:45,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-08-12 19:59:45,817 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,833 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:45,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 19:59:45,833 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,838 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,840 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,849 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:45,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-08-12 19:59:45,849 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 19:59:45,861 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-08-12 19:59:45,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-08-12 19:59:45,862 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:45,972 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26
[2021-08-12 19:59:45,972 INFO L628 ElimStorePlain]: treesize reduction 133, result has 44.8 percent of original size
[2021-08-12 19:59:45,974 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 19:59:45,974 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:90
[2021-08-12 19:59:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:46,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353960442] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:46,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:46,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18
[2021-08-12 19:59:46,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429045553]
[2021-08-12 19:59:46,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:59:46,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:46,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:59:46,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:59:46,059 INFO L87 Difference]: Start difference. First operand 1763 states and 5970 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:48,225 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48
[2021-08-12 19:59:48,719 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57
[2021-08-12 19:59:49,024 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55
[2021-08-12 19:59:49,748 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34
[2021-08-12 19:59:50,775 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38
[2021-08-12 19:59:51,000 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41
[2021-08-12 19:59:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 19:59:54,317 INFO L93 Difference]: Finished difference Result 3740 states and 11854 transitions.
[2021-08-12 19:59:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-08-12 19:59:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 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
[2021-08-12 19:59:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 19:59:54,325 INFO L225 Difference]: With dead ends: 3740
[2021-08-12 19:59:54,325 INFO L226 Difference]: Without dead ends: 3681
[2021-08-12 19:59:54,325 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 3208.3ms TimeCoverageRelationStatistics Valid=639, Invalid=2553, Unknown=0, NotChecked=0, Total=3192
[2021-08-12 19:59:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states.
[2021-08-12 19:59:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1801.
[2021-08-12 19:59:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 3.397777777777778) internal successors, (6116), 1800 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 6116 transitions.
[2021-08-12 19:59:54,993 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 6116 transitions. Word has length 26
[2021-08-12 19:59:54,993 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 19:59:54,994 INFO L482 AbstractCegarLoop]: Abstraction has 1801 states and 6116 transitions.
[2021-08-12 19:59:54,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 6116 transitions.
[2021-08-12 19:59:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 19:59:54,996 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 19:59:54,996 INFO L550 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]
[2021-08-12 19:59:55,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1767,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 19:59:55,197 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 19:59:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 19:59:55,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1512099618, now seen corresponding path program 27 times
[2021-08-12 19:59:55,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 19:59:55,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721446450]
[2021-08-12 19:59:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 19:59:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 19:59:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:55,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 19:59:55,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721446450]
[2021-08-12 19:59:55,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721446450] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:55,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655826684]
[2021-08-12 19:59:55,779 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
[2021-08-12 19:59:55,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 19:59:55,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 19:59:55,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 19:59:55,806 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 19:59:56,247 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 72
[2021-08-12 19:59:56,488 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 105
[2021-08-12 19:59:56,628 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:59:56,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 19:59:56,630 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:56,761 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121
[2021-08-12 19:59:56,761 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:56,779 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:56,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 19:59:56,782 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:56,919 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121
[2021-08-12 19:59:56,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:56,941 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:56,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 19:59:56,942 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:57,105 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 119
[2021-08-12 19:59:57,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,125 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:57,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 19:59:57,129 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:57,266 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2021-08-12 19:59:57,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 19:59:57,287 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:57,417 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2021-08-12 19:59:57,417 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,434 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 19:59:57,435 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:57,570 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2021-08-12 19:59:57,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,590 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 19:59:57,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28
[2021-08-12 19:59:57,594 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:57,723 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 96
[2021-08-12 19:59:57,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,741 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 19:59:57,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 19:59:57,742 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 19:59:57,866 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2021-08-12 19:59:57,868 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 19:59:57,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 19:59:57,891 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:365, output treesize:357
[2021-08-12 19:59:58,104 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40
[2021-08-12 19:59:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 19:59:58,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655826684] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 19:59:58,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 19:59:58,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19
[2021-08-12 19:59:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173750641]
[2021-08-12 19:59:58,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 19:59:58,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 19:59:58,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 19:59:58,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342
[2021-08-12 19:59:58,229 INFO L87 Difference]: Start difference. First operand 1801 states and 6116 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 19:59:59,182 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47
[2021-08-12 19:59:59,416 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54
[2021-08-12 19:59:59,720 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48
[2021-08-12 20:00:00,016 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59
[2021-08-12 20:00:00,377 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 76
[2021-08-12 20:00:00,616 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58
[2021-08-12 20:00:01,337 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84
[2021-08-12 20:00:01,770 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77
[2021-08-12 20:00:02,994 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 67
[2021-08-12 20:00:04,018 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 44
[2021-08-12 20:00:04,433 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33
[2021-08-12 20:00:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:00:06,636 INFO L93 Difference]: Finished difference Result 2393 states and 7898 transitions.
[2021-08-12 20:00:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-08-12 20:00:06,636 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:00:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:00:06,642 INFO L225 Difference]: With dead ends: 2393
[2021-08-12 20:00:06,642 INFO L226 Difference]: Without dead ends: 2361
[2021-08-12 20:00:06,643 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 5016.8ms TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722
[2021-08-12 20:00:06,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states.
[2021-08-12 20:00:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1809.
[2021-08-12 20:00:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 3.396017699115044) internal successors, (6140), 1808 states have internal predecessors, (6140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 6140 transitions.
[2021-08-12 20:00:07,410 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 6140 transitions. Word has length 26
[2021-08-12 20:00:07,410 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:00:07,410 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 6140 transitions.
[2021-08-12 20:00:07,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 6140 transitions.
[2021-08-12 20:00:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:00:07,413 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:00:07,413 INFO L550 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]
[2021-08-12 20:00:07,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1868
[2021-08-12 20:00:07,614 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:00:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:00:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash -105433162, now seen corresponding path program 28 times
[2021-08-12 20:00:07,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:00:07,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800107992]
[2021-08-12 20:00:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:00:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:00:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:08,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:00:08,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800107992]
[2021-08-12 20:00:08,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800107992] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:08,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450350173]
[2021-08-12 20:00:08,078 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
[2021-08-12 20:00:08,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 20:00:08,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:00:08,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 20:00:08,113 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:00:08,562 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2021-08-12 20:00:08,666 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:08,674 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:08,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:00:08,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:08,813 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 116
[2021-08-12 20:00:08,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:08,821 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:08,831 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:00:08,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 20:00:08,832 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:08,969 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111
[2021-08-12 20:00:08,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:08,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:08,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 20:00:08,989 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:09,114 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104
[2021-08-12 20:00:09,114 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,121 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:09,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:00:09,132 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:09,260 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2021-08-12 20:00:09,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,268 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:09,276 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:00:09,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:00:09,278 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:09,401 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93
[2021-08-12 20:00:09,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,408 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:09,415 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 20:00:09,417 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:09,538 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2021-08-12 20:00:09,539 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,545 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:09,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:00:09,554 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:09,671 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 81
[2021-08-12 20:00:09,671 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,678 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:09,686 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:00:09,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:00:09,689 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:09,785 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:09,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:00:09,792 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174
[2021-08-12 20:00:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:09,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450350173] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:09,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:00:09,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 20:00:09,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61088549]
[2021-08-12 20:00:09,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 20:00:09,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:00:09,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 20:00:09,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2021-08-12 20:00:09,987 INFO L87 Difference]: Start difference. First operand 1809 states and 6140 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:10,330 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50
[2021-08-12 20:00:10,891 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58
[2021-08-12 20:00:11,295 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39
[2021-08-12 20:00:11,577 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36
[2021-08-12 20:00:11,789 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38
[2021-08-12 20:00:12,679 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 69
[2021-08-12 20:00:13,857 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73
[2021-08-12 20:00:14,137 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50
[2021-08-12 20:00:15,235 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46
[2021-08-12 20:00:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:00:17,942 INFO L93 Difference]: Finished difference Result 2639 states and 8682 transitions.
[2021-08-12 20:00:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-08-12 20:00:17,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:00:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:00:17,949 INFO L225 Difference]: With dead ends: 2639
[2021-08-12 20:00:17,949 INFO L226 Difference]: Without dead ends: 2603
[2021-08-12 20:00:17,950 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 3592.1ms TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482
[2021-08-12 20:00:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states.
[2021-08-12 20:00:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1822.
[2021-08-12 20:00:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions.
[2021-08-12 20:00:18,908 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26
[2021-08-12 20:00:18,908 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:00:18,908 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions.
[2021-08-12 20:00:18,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions.
[2021-08-12 20:00:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:00:18,911 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:00:18,911 INFO L550 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]
[2021-08-12 20:00:19,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1895,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:00:19,133 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:00:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:00:19,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1795376066, now seen corresponding path program 29 times
[2021-08-12 20:00:19,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:00:19,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638534021]
[2021-08-12 20:00:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:00:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:00:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:19,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:00:19,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638534021]
[2021-08-12 20:00:19,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638534021] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:19,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836626468]
[2021-08-12 20:00:19,563 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
[2021-08-12 20:00:19,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 20:00:19,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:00:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:00:19,603 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:00:20,034 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63
[2021-08-12 20:00:20,248 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_156, v_prenex_158], 6=[v_prenex_157]}
[2021-08-12 20:00:20,254 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:20,285 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:00:20,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 20:00:20,289 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:20,334 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:00:20,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 20:00:20,336 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:20,534 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 83
[2021-08-12 20:00:20,535 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:20,543 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:20,559 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:20,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 20:00:20,566 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:20,590 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 20:00:20,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 20:00:20,592 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:20,781 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 78
[2021-08-12 20:00:20,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:20,789 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:20,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:20,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 20:00:20,810 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:20,818 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:20,836 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:00:20,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31
[2021-08-12 20:00:20,838 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:21,237 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74
[2021-08-12 20:00:21,238 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.4 percent of original size
[2021-08-12 20:00:21,245 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:21,250 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:21,265 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 20:00:21,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:00:21,267 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:21,273 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:21,285 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:21,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32
[2021-08-12 20:00:21,291 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:21,627 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65
[2021-08-12 20:00:21,627 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.8 percent of original size
[2021-08-12 20:00:21,665 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:00:21,665 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:373, output treesize:323
[2021-08-12 20:00:21,961 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50
[2021-08-12 20:00:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:22,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836626468] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:22,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:00:22,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-08-12 20:00:22,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515265752]
[2021-08-12 20:00:22,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 20:00:22,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:00:22,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 20:00:22,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2021-08-12 20:00:22,104 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:22,935 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 27
[2021-08-12 20:00:23,765 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 20
[2021-08-12 20:00:24,853 WARN L205 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66
[2021-08-12 20:00:25,611 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37
[2021-08-12 20:00:25,811 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39
[2021-08-12 20:00:27,675 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 54
[2021-08-12 20:00:28,660 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40
[2021-08-12 20:00:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:00:30,514 INFO L93 Difference]: Finished difference Result 2418 states and 8047 transitions.
[2021-08-12 20:00:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-08-12 20:00:30,515 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:00:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:00:30,521 INFO L225 Difference]: With dead ends: 2418
[2021-08-12 20:00:30,521 INFO L226 Difference]: Without dead ends: 2391
[2021-08-12 20:00:30,522 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4409.4ms TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332
[2021-08-12 20:00:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states.
[2021-08-12 20:00:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1822.
[2021-08-12 20:00:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions.
[2021-08-12 20:00:31,453 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26
[2021-08-12 20:00:31,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:00:31,453 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions.
[2021-08-12 20:00:31,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:31,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions.
[2021-08-12 20:00:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:00:31,457 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:00:31,457 INFO L550 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]
[2021-08-12 20:00:31,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1911,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:00:31,676 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:00:31,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:00:31,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1102392532, now seen corresponding path program 48 times
[2021-08-12 20:00:31,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:00:31,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389158507]
[2021-08-12 20:00:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:00:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:00:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:32,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:00:32,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389158507]
[2021-08-12 20:00:32,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389158507] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:32,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708773238]
[2021-08-12 20:00:32,311 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
[2021-08-12 20:00:32,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-08-12 20:00:32,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:00:32,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 20:00:32,347 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:00:33,041 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,041 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,042 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,043 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,044 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,045 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-08-12 20:00:33,046 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,051 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,052 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,053 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,053 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,055 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,056 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 20:00:33,058 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,071 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,072 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,073 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,073 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,074 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,076 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16
[2021-08-12 20:00:33,077 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,082 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,083 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,084 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,084 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,085 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,087 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16
[2021-08-12 20:00:33,089 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,094 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,095 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,095 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,096 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,097 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,099 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2021-08-12 20:00:33,100 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,106 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,107 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,107 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,108 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,109 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,111 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 20:00:33,113 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,118 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,119 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,119 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,120 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,121 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,122 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-08-12 20:00:33,125 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,130 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,131 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,132 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,132 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,134 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,135 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 19
[2021-08-12 20:00:33,136 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,142 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,142 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,143 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,144 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,146 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,147 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 20:00:33,149 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,155 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,155 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,156 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,156 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,158 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,159 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-08-12 20:00:33,161 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,166 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,166 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,167 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,168 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,169 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,170 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 20:00:33,172 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,178 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,179 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,180 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,182 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 20:00:33,183 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,188 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,189 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,190 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,190 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,192 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-08-12 20:00:33,195 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,199 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,200 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,201 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,201 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,202 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,204 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 20:00:33,205 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,210 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,210 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,212 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,213 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,214 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-08-12 20:00:33,216 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,220 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,221 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,221 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:33,222 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:33,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 20:00:33,224 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:33,289 INFO L628 ElimStorePlain]: treesize reduction 223, result has 12.9 percent of original size
[2021-08-12 20:00:33,291 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 20:00:33,291 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:21
[2021-08-12 20:00:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:33,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708773238] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:33,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:00:33,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-08-12 20:00:33,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258825935]
[2021-08-12 20:00:33,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 20:00:33,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:00:33,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 20:00:33,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306
[2021-08-12 20:00:33,328 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:34,075 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44
[2021-08-12 20:00:34,989 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42
[2021-08-12 20:00:35,210 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45
[2021-08-12 20:00:35,369 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44
[2021-08-12 20:00:37,043 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49
[2021-08-12 20:00:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:00:39,688 INFO L93 Difference]: Finished difference Result 2282 states and 7551 transitions.
[2021-08-12 20:00:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-08-12 20:00:39,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:00:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:00:39,695 INFO L225 Difference]: With dead ends: 2282
[2021-08-12 20:00:39,696 INFO L226 Difference]: Without dead ends: 2258
[2021-08-12 20:00:39,696 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2615.7ms TimeCoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640
[2021-08-12 20:00:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states.
[2021-08-12 20:00:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1818.
[2021-08-12 20:00:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions.
[2021-08-12 20:00:40,651 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26
[2021-08-12 20:00:40,651 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:00:40,651 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions.
[2021-08-12 20:00:40,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions.
[2021-08-12 20:00:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:00:40,655 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:00:40,655 INFO L550 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]
[2021-08-12 20:00:40,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1967
[2021-08-12 20:00:40,873 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:00:40,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:00:40,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2027886398, now seen corresponding path program 49 times
[2021-08-12 20:00:40,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:00:40,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807896798]
[2021-08-12 20:00:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:00:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:00:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:41,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:00:41,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807896798]
[2021-08-12 20:00:41,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807896798] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:41,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82522980]
[2021-08-12 20:00:41,544 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
[2021-08-12 20:00:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:00:41,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 20:00:41,580 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:00:41,981 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41
[2021-08-12 20:00:42,047 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_161], 5=[v_prenex_163, v_prenex_159]}
[2021-08-12 20:00:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:42,055 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:42,057 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:42,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13
[2021-08-12 20:00:42,064 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:42,070 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:42,071 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:42,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-08-12 20:00:42,074 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:42,200 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44
[2021-08-12 20:00:42,201 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size
[2021-08-12 20:00:42,201 INFO L518 ElimStorePlain]: Eliminatee v_prenex_161 vanished before elimination
[2021-08-12 20:00:42,205 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:42,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13
[2021-08-12 20:00:42,207 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:42,246 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:42,250 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:42,251 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:42,252 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:42,252 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:00:42,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-08-12 20:00:42,254 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:42,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:42,289 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-08-12 20:00:42,289 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:43
[2021-08-12 20:00:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:42,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82522980] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:42,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:00:42,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-08-12 20:00:42,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555114372]
[2021-08-12 20:00:42,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 20:00:42,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:00:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 20:00:42,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306
[2021-08-12 20:00:42,346 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:43,167 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40
[2021-08-12 20:00:43,938 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36
[2021-08-12 20:00:44,075 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38
[2021-08-12 20:00:46,443 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50
[2021-08-12 20:00:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:00:49,375 INFO L93 Difference]: Finished difference Result 2475 states and 8186 transitions.
[2021-08-12 20:00:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-08-12 20:00:49,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:00:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:00:49,382 INFO L225 Difference]: With dead ends: 2475
[2021-08-12 20:00:49,382 INFO L226 Difference]: Without dead ends: 2458
[2021-08-12 20:00:49,383 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 3267.2ms TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640
[2021-08-12 20:00:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states.
[2021-08-12 20:00:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1818.
[2021-08-12 20:00:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions.
[2021-08-12 20:00:50,309 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26
[2021-08-12 20:00:50,309 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:00:50,309 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions.
[2021-08-12 20:00:50,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions.
[2021-08-12 20:00:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:00:50,313 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:00:50,313 INFO L550 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]
[2021-08-12 20:00:50,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2057
[2021-08-12 20:00:50,538 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:00:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:00:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash 849981858, now seen corresponding path program 50 times
[2021-08-12 20:00:50,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:00:50,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274943268]
[2021-08-12 20:00:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:00:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:00:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:51,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:00:51,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274943268]
[2021-08-12 20:00:51,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274943268] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:51,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816700682]
[2021-08-12 20:00:51,128 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)
Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:00:51,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 20:00:51,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:00:51,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-08-12 20:00:51,172 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:00:51,871 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:51,916 INFO L354 Elim1Store]: treesize reduction 20, result has 55.6 percent of original size
[2021-08-12 20:00:51,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 40
[2021-08-12 20:00:51,919 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:51,984 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:00:51,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52
[2021-08-12 20:00:51,997 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,059 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size
[2021-08-12 20:00:52,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51
[2021-08-12 20:00:52,064 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,075 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,136 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:00:52,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 55
[2021-08-12 20:00:52,147 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,159 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,212 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 20:00:52,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47
[2021-08-12 20:00:52,217 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,229 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,289 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 20:00:52,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44
[2021-08-12 20:00:52,298 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,309 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,407 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:00:52,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52
[2021-08-12 20:00:52,422 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,434 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,489 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size
[2021-08-12 20:00:52,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51
[2021-08-12 20:00:52,495 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,506 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:52,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57
[2021-08-12 20:00:52,578 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,590 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,651 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:00:52,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55
[2021-08-12 20:00:52,661 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:00:52,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 63
[2021-08-12 20:00:52,738 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,771 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:00:52,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:00:52,772 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,833 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 20:00:52,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44
[2021-08-12 20:00:52,839 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,880 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:00:52,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:00:52,881 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,959 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size
[2021-08-12 20:00:52,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 37
[2021-08-12 20:00:52,961 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:52,969 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:00:52,977 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:00:52,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1
[2021-08-12 20:00:52,978 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:00:53,631 WARN L205 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47
[2021-08-12 20:00:53,631 INFO L628 ElimStorePlain]: treesize reduction 411, result has 45.1 percent of original size
[2021-08-12 20:00:53,642 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:00:53,642 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:945, output treesize:389
[2021-08-12 20:00:54,032 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37
[2021-08-12 20:00:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:00:54,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816700682] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:00:54,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:00:54,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20
[2021-08-12 20:00:54,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084439858]
[2021-08-12 20:00:54,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-08-12 20:00:54,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:00:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-08-12 20:00:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420
[2021-08-12 20:00:54,171 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:00:55,183 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48
[2021-08-12 20:00:55,841 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53
[2021-08-12 20:00:56,547 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34
[2021-08-12 20:00:56,842 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56
[2021-08-12 20:00:57,304 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41
[2021-08-12 20:00:57,472 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50
[2021-08-12 20:00:57,739 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48
[2021-08-12 20:00:57,892 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50
[2021-08-12 20:00:58,076 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54
[2021-08-12 20:00:58,270 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45
[2021-08-12 20:00:58,411 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45
[2021-08-12 20:00:58,569 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45
[2021-08-12 20:00:58,880 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46
[2021-08-12 20:00:59,378 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53
[2021-08-12 20:00:59,773 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52
[2021-08-12 20:01:00,093 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48
[2021-08-12 20:01:00,381 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58
[2021-08-12 20:01:00,614 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49
[2021-08-12 20:01:00,950 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44
[2021-08-12 20:01:01,465 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62
[2021-08-12 20:01:01,844 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65
[2021-08-12 20:01:02,013 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50
[2021-08-12 20:01:02,218 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65
[2021-08-12 20:01:03,633 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62
[2021-08-12 20:01:03,812 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59
[2021-08-12 20:01:06,614 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 26
[2021-08-12 20:01:07,823 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35
[2021-08-12 20:01:07,974 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35
[2021-08-12 20:01:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:01:09,722 INFO L93 Difference]: Finished difference Result 3330 states and 10550 transitions.
[2021-08-12 20:01:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2021-08-12 20:01:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 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
[2021-08-12 20:01:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:01:09,731 INFO L225 Difference]: With dead ends: 3330
[2021-08-12 20:01:09,731 INFO L226 Difference]: Without dead ends: 3272
[2021-08-12 20:01:09,731 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 8738.0ms TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256
[2021-08-12 20:01:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states.
[2021-08-12 20:01:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1831.
[2021-08-12 20:01:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 3.40327868852459) internal successors, (6228), 1830 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 6228 transitions.
[2021-08-12 20:01:10,685 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 6228 transitions. Word has length 26
[2021-08-12 20:01:10,685 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:01:10,685 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 6228 transitions.
[2021-08-12 20:01:10,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 6228 transitions.
[2021-08-12 20:01:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:01:10,689 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:01:10,689 INFO L550 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]
[2021-08-12 20:01:10,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2071,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:01:10,914 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:01:10,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:01:10,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1044384706, now seen corresponding path program 51 times
[2021-08-12 20:01:10,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:01:10,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993720160]
[2021-08-12 20:01:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:01:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:01:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:11,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:01:11,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993720160]
[2021-08-12 20:01:11,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993720160] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:11,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463034138]
[2021-08-12 20:01:11,530 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
[2021-08-12 20:01:11,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-08-12 20:01:11,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:01:11,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core
[2021-08-12 20:01:11,568 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:01:12,416 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,464 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:01:12,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52
[2021-08-12 20:01:12,474 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,483 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,539 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:01:12,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55
[2021-08-12 20:01:12,546 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,570 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,610 INFO L354 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size
[2021-08-12 20:01:12,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 36
[2021-08-12 20:01:12,612 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,680 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size
[2021-08-12 20:01:12,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59
[2021-08-12 20:01:12,693 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,703 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,722 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:01:12,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:01:12,723 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,734 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,774 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:12,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57
[2021-08-12 20:01:12,801 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,862 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 20:01:12,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44
[2021-08-12 20:01:12,870 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,925 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size
[2021-08-12 20:01:12,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 42
[2021-08-12 20:01:12,929 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:12,994 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size
[2021-08-12 20:01:12,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52
[2021-08-12 20:01:13,004 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,015 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,030 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:01:13,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1
[2021-08-12 20:01:13,031 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,041 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,091 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size
[2021-08-12 20:01:13,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44
[2021-08-12 20:01:13,097 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,142 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size
[2021-08-12 20:01:13,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 29
[2021-08-12 20:01:13,144 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,154 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,170 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:01:13,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 1
[2021-08-12 20:01:13,171 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,181 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,197 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:01:13,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1
[2021-08-12 20:01:13,198 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,208 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,255 INFO L354 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size
[2021-08-12 20:01:13,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 48
[2021-08-12 20:01:13,258 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,267 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:13,275 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size
[2021-08-12 20:01:13,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:01:13,276 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:13,917 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50
[2021-08-12 20:01:13,917 INFO L628 ElimStorePlain]: treesize reduction 174, result has 69.4 percent of original size
[2021-08-12 20:01:13,924 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 9 xjuncts.
[2021-08-12 20:01:13,925 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:461
[2021-08-12 20:01:14,304 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51
[2021-08-12 20:01:14,782 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44
[2021-08-12 20:01:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:14,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463034138] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:14,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:01:14,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23
[2021-08-12 20:01:14,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757157964]
[2021-08-12 20:01:14,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states
[2021-08-12 20:01:14,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:01:14,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-08-12 20:01:14,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552
[2021-08-12 20:01:14,938 INFO L87 Difference]: Start difference. First operand 1831 states and 6228 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 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)
[2021-08-12 20:01:16,012 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44
[2021-08-12 20:01:16,314 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37
[2021-08-12 20:01:16,512 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39
[2021-08-12 20:01:16,699 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35
[2021-08-12 20:01:16,937 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46
[2021-08-12 20:01:17,733 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69
[2021-08-12 20:01:18,122 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43
[2021-08-12 20:01:18,380 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48
[2021-08-12 20:01:18,529 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53
[2021-08-12 20:01:18,738 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40
[2021-08-12 20:01:18,881 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42
[2021-08-12 20:01:19,076 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41
[2021-08-12 20:01:19,579 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59
[2021-08-12 20:01:20,237 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62
[2021-08-12 20:01:20,644 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47
[2021-08-12 20:01:20,996 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57
[2021-08-12 20:01:21,163 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 38
[2021-08-12 20:01:21,406 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44
[2021-08-12 20:01:21,734 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42
[2021-08-12 20:01:22,497 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45
[2021-08-12 20:01:22,722 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 39
[2021-08-12 20:01:22,864 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63
[2021-08-12 20:01:23,139 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35
[2021-08-12 20:01:24,381 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64
[2021-08-12 20:01:25,926 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52
[2021-08-12 20:01:26,409 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48
[2021-08-12 20:01:27,024 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59
[2021-08-12 20:01:28,323 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46
[2021-08-12 20:01:28,910 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63
[2021-08-12 20:01:29,070 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 32
[2021-08-12 20:01:29,250 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 37
[2021-08-12 20:01:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:01:31,166 INFO L93 Difference]: Finished difference Result 3154 states and 10150 transitions.
[2021-08-12 20:01:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-08-12 20:01:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 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 26
[2021-08-12 20:01:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:01:31,172 INFO L225 Difference]: With dead ends: 3154
[2021-08-12 20:01:31,172 INFO L226 Difference]: Without dead ends: 3089
[2021-08-12 20:01:31,173 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 11327.5ms TimeCoverageRelationStatistics Valid=867, Invalid=4103, Unknown=0, NotChecked=0, Total=4970
[2021-08-12 20:01:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states.
[2021-08-12 20:01:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1811.
[2021-08-12 20:01:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.4027624309392266) internal successors, (6159), 1810 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6159 transitions.
[2021-08-12 20:01:32,014 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6159 transitions. Word has length 26
[2021-08-12 20:01:32,014 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:01:32,014 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6159 transitions.
[2021-08-12 20:01:32,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 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)
[2021-08-12 20:01:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6159 transitions.
[2021-08-12 20:01:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:01:32,018 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:01:32,018 INFO L550 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]
[2021-08-12 20:01:32,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2246
[2021-08-12 20:01:32,243 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:01:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:01:32,243 INFO L82 PathProgramCache]: Analyzing trace with hash -696255298, now seen corresponding path program 52 times
[2021-08-12 20:01:32,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:01:32,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481755860]
[2021-08-12 20:01:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:01:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:01:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:32,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:01:32,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481755860]
[2021-08-12 20:01:32,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481755860] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:32,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323163910]
[2021-08-12 20:01:32,837 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
[2021-08-12 20:01:32,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 20:01:32,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:01:32,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:01:32,875 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:01:33,672 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81
[2021-08-12 20:01:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:33,871 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:33,921 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-08-12 20:01:33,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32
[2021-08-12 20:01:33,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:33,936 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:33,963 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:33,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37
[2021-08-12 20:01:33,972 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:34,256 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 131
[2021-08-12 20:01:34,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:34,264 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,298 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-08-12 20:01:34,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39
[2021-08-12 20:01:34,303 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,311 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,336 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-08-12 20:01:34,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 36
[2021-08-12 20:01:34,342 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:34,623 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 126
[2021-08-12 20:01:34,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,654 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size
[2021-08-12 20:01:34,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:01:34,656 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:34,663 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,664 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:34,683 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2021-08-12 20:01:34,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28
[2021-08-12 20:01:34,687 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:35,185 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115
[2021-08-12 20:01:35,185 INFO L628 ElimStorePlain]: treesize reduction 38, result has 92.7 percent of original size
[2021-08-12 20:01:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:35,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43
[2021-08-12 20:01:35,222 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:35,229 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,256 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-08-12 20:01:35,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 39
[2021-08-12 20:01:35,276 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:35,725 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110
[2021-08-12 20:01:35,725 INFO L628 ElimStorePlain]: treesize reduction 47, result has 90.4 percent of original size
[2021-08-12 20:01:35,732 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,735 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:35,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43
[2021-08-12 20:01:35,770 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:35,776 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,779 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:35,800 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size
[2021-08-12 20:01:35,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 26
[2021-08-12 20:01:35,801 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:35,998 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2021-08-12 20:01:35,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:36,008 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:36,031 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2021-08-12 20:01:36,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31
[2021-08-12 20:01:36,035 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:36,042 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:36,044 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:36,049 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size
[2021-08-12 20:01:36,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1
[2021-08-12 20:01:36,050 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:36,206 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2021-08-12 20:01:36,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:36,219 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts.
[2021-08-12 20:01:36,219 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:621, output treesize:257
[2021-08-12 20:01:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:36,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323163910] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:36,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:01:36,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19
[2021-08-12 20:01:36,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977270278]
[2021-08-12 20:01:36,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 20:01:36,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:01:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 20:01:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380
[2021-08-12 20:01:36,382 INFO L87 Difference]: Start difference. First operand 1811 states and 6159 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:36,741 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50
[2021-08-12 20:01:37,803 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46
[2021-08-12 20:01:38,154 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52
[2021-08-12 20:01:38,910 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94
[2021-08-12 20:01:39,112 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54
[2021-08-12 20:01:39,802 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97
[2021-08-12 20:01:40,873 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102
[2021-08-12 20:01:41,234 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42
[2021-08-12 20:01:41,897 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37
[2021-08-12 20:01:42,085 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35
[2021-08-12 20:01:43,419 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31
[2021-08-12 20:01:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:01:45,481 INFO L93 Difference]: Finished difference Result 3036 states and 9908 transitions.
[2021-08-12 20:01:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2021-08-12 20:01:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:01:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:01:45,488 INFO L225 Difference]: With dead ends: 3036
[2021-08-12 20:01:45,488 INFO L226 Difference]: Without dead ends: 2983
[2021-08-12 20:01:45,489 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 4734.9ms TimeCoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862
[2021-08-12 20:01:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states.
[2021-08-12 20:01:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1871.
[2021-08-12 20:01:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.411229946524064) internal successors, (6379), 1870 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6379 transitions.
[2021-08-12 20:01:46,277 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6379 transitions. Word has length 26
[2021-08-12 20:01:46,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:01:46,277 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6379 transitions.
[2021-08-12 20:01:46,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6379 transitions.
[2021-08-12 20:01:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:01:46,280 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:01:46,280 INFO L550 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]
[2021-08-12 20:01:46,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2411
[2021-08-12 20:01:46,482 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:01:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:01:46,482 INFO L82 PathProgramCache]: Analyzing trace with hash 227092556, now seen corresponding path program 53 times
[2021-08-12 20:01:46,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:01:46,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521547298]
[2021-08-12 20:01:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:01:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:01:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:46,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:01:46,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521547298]
[2021-08-12 20:01:46,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521547298] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:46,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389761509]
[2021-08-12 20:01:46,874 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
[2021-08-12 20:01:46,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-08-12 20:01:46,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:01:46,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:01:46,902 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:01:47,378 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,380 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,380 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,380 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,382 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2021-08-12 20:01:47,383 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,387 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,389 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,390 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,391 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-08-12 20:01:47,393 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,396 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,397 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,398 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,398 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,405 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,408 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-08-12 20:01:47,409 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,415 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,416 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,417 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,417 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,418 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,420 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-08-12 20:01:47,422 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,427 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,430 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,430 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,431 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,433 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-08-12 20:01:47,435 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,440 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,441 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,442 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,443 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,443 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,446 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 20:01:47,447 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,452 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,455 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,455 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,458 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-08-12 20:01:47,459 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,464 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,467 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,467 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,470 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16
[2021-08-12 20:01:47,471 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,476 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,477 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,479 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,479 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,482 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13
[2021-08-12 20:01:47,483 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,488 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,490 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,491 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,491 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,494 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13
[2021-08-12 20:01:47,495 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,500 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,501 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,502 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,502 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,503 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,505 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-08-12 20:01:47,507 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,511 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,512 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,513 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,514 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,516 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-08-12 20:01:47,517 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,522 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,524 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,524 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,527 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-08-12 20:01:47,528 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,533 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,534 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,535 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,536 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,538 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-08-12 20:01:47,539 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,543 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,546 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,546 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,548 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13
[2021-08-12 20:01:47,550 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,552 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,553 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,554 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:47,554 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:01:47,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7
[2021-08-12 20:01:47,556 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:47,590 INFO L628 ElimStorePlain]: treesize reduction 20, result has 64.9 percent of original size
[2021-08-12 20:01:47,591 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-08-12 20:01:47,591 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27
[2021-08-12 20:01:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:47,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389761509] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:47,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:01:47,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-08-12 20:01:47,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829378210]
[2021-08-12 20:01:47,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 20:01:47,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:01:47,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 20:01:47,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342
[2021-08-12 20:01:47,630 INFO L87 Difference]: Start difference. First operand 1871 states and 6379 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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)
[2021-08-12 20:01:49,883 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57
[2021-08-12 20:01:50,047 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57
[2021-08-12 20:01:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:01:53,381 INFO L93 Difference]: Finished difference Result 2489 states and 8129 transitions.
[2021-08-12 20:01:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-08-12 20:01:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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 26
[2021-08-12 20:01:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:01:53,388 INFO L225 Difference]: With dead ends: 2489
[2021-08-12 20:01:53,389 INFO L226 Difference]: Without dead ends: 2449
[2021-08-12 20:01:53,389 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1722.8ms TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560
[2021-08-12 20:01:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states.
[2021-08-12 20:01:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1871.
[2021-08-12 20:01:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.409090909090909) internal successors, (6375), 1870 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:01:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6375 transitions.
[2021-08-12 20:01:54,426 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6375 transitions. Word has length 26
[2021-08-12 20:01:54,426 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:01:54,426 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6375 transitions.
[2021-08-12 20:01:54,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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)
[2021-08-12 20:01:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6375 transitions.
[2021-08-12 20:01:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:01:54,429 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:01:54,429 INFO L550 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]
[2021-08-12 20:01:54,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2496
[2021-08-12 20:01:54,630 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:01:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:01:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash -538930356, now seen corresponding path program 54 times
[2021-08-12 20:01:54,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:01:54,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384955459]
[2021-08-12 20:01:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:01:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:01:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:55,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:01:55,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384955459]
[2021-08-12 20:01:55,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384955459] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:55,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117111289]
[2021-08-12 20:01:55,138 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
[2021-08-12 20:01:55,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-08-12 20:01:55,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:01:55,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:01:55,174 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:01:55,447 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,449 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,472 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size
[2021-08-12 20:01:55,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31
[2021-08-12 20:01:55,474 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,482 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,505 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size
[2021-08-12 20:01:55,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28
[2021-08-12 20:01:55,510 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,516 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,519 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,551 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size
[2021-08-12 20:01:55,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 25
[2021-08-12 20:01:55,553 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,559 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,575 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-08-12 20:01:55,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:01:55,577 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,583 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,611 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2021-08-12 20:01:55,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28
[2021-08-12 20:01:55,613 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,619 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,622 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,646 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2021-08-12 20:01:55,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28
[2021-08-12 20:01:55,648 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,654 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,670 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-08-12 20:01:55,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1
[2021-08-12 20:01:55,671 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,677 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,680 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,705 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size
[2021-08-12 20:01:55,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26
[2021-08-12 20:01:55,706 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,712 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,716 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,729 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-08-12 20:01:55,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:01:55,730 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,736 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,739 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,751 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-08-12 20:01:55,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1
[2021-08-12 20:01:55,752 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,758 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,785 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size
[2021-08-12 20:01:55,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26
[2021-08-12 20:01:55,787 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,792 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,795 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,808 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-08-12 20:01:55,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:01:55,809 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,815 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,841 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size
[2021-08-12 20:01:55,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24
[2021-08-12 20:01:55,843 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,848 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,851 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,874 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:01:55,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39
[2021-08-12 20:01:55,898 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,919 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,922 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,943 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2021-08-12 20:01:55,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25
[2021-08-12 20:01:55,946 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:55,950 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,954 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:01:55,959 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-08-12 20:01:55,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-08-12 20:01:55,960 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:01:56,085 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 22
[2021-08-12 20:01:56,086 INFO L628 ElimStorePlain]: treesize reduction 125, result has 42.7 percent of original size
[2021-08-12 20:01:56,087 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:01:56,087 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:93
[2021-08-12 20:01:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:01:56,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117111289] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:01:56,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:01:56,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-08-12 20:01:56,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683767661]
[2021-08-12 20:01:56,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 20:01:56,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:01:56,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 20:01:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342
[2021-08-12 20:01:56,222 INFO L87 Difference]: Start difference. First operand 1871 states and 6375 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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)
[2021-08-12 20:01:56,647 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 34
[2021-08-12 20:01:56,864 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50
[2021-08-12 20:01:57,435 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42
[2021-08-12 20:01:58,015 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51
[2021-08-12 20:01:58,168 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37
[2021-08-12 20:01:58,603 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45
[2021-08-12 20:01:58,967 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40
[2021-08-12 20:01:59,107 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46
[2021-08-12 20:01:59,348 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49
[2021-08-12 20:01:59,759 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41
[2021-08-12 20:01:59,951 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53
[2021-08-12 20:02:00,229 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53
[2021-08-12 20:02:00,695 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45
[2021-08-12 20:02:01,225 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57
[2021-08-12 20:02:01,504 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59
[2021-08-12 20:02:01,782 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59
[2021-08-12 20:02:02,120 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57
[2021-08-12 20:02:02,967 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48
[2021-08-12 20:02:03,343 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54
[2021-08-12 20:02:03,775 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62
[2021-08-12 20:02:04,232 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62
[2021-08-12 20:02:04,406 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23
[2021-08-12 20:02:05,373 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35
[2021-08-12 20:02:06,153 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29
[2021-08-12 20:02:07,248 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38
[2021-08-12 20:02:08,514 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47
[2021-08-12 20:02:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:02:10,841 INFO L93 Difference]: Finished difference Result 3109 states and 9970 transitions.
[2021-08-12 20:02:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-08-12 20:02:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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 26
[2021-08-12 20:02:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:02:10,850 INFO L225 Difference]: With dead ends: 3109
[2021-08-12 20:02:10,850 INFO L226 Difference]: Without dead ends: 3069
[2021-08-12 20:02:10,851 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 7731.9ms TimeCoverageRelationStatistics Valid=747, Invalid=2913, Unknown=0, NotChecked=0, Total=3660
[2021-08-12 20:02:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states.
[2021-08-12 20:02:11,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1881.
[2021-08-12 20:02:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 3.4159574468085108) internal successors, (6422), 1880 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 6422 transitions.
[2021-08-12 20:02:11,904 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 6422 transitions. Word has length 26
[2021-08-12 20:02:11,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:02:11,905 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 6422 transitions.
[2021-08-12 20:02:11,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 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)
[2021-08-12 20:02:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 6422 transitions.
[2021-08-12 20:02:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:02:11,908 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:02:11,908 INFO L550 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]
[2021-08-12 20:02:12,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2592,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:02:12,133 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:02:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:02:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1644457752, now seen corresponding path program 30 times
[2021-08-12 20:02:12,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:02:12,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199743588]
[2021-08-12 20:02:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:02:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:02:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:12,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:02:12,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199743588]
[2021-08-12 20:02:12,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199743588] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:12,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946776529]
[2021-08-12 20:02:12,601 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 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
[2021-08-12 20:02:12,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-08-12 20:02:12,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:02:12,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 20:02:12,645 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:02:13,181 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2021-08-12 20:02:13,418 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55
[2021-08-12 20:02:13,483 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_191, v_prenex_189], 2=[v_prenex_190, A]}
[2021-08-12 20:02:13,489 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:13,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 20:02:13,492 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:13,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:02:13,499 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:13,677 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55
[2021-08-12 20:02:13,677 INFO L628 ElimStorePlain]: treesize reduction 118, result has 55.1 percent of original size
[2021-08-12 20:02:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:13,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-08-12 20:02:13,684 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:13,747 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:13,752 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:13,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:13,754 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:13,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:13,818 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:13,818 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:13,820 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:13,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:13,821 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:13,826 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:13,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:02:13,828 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:13,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:13,880 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:02:13,881 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:293, output treesize:51
[2021-08-12 20:02:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:13,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946776529] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:13,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:02:13,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19
[2021-08-12 20:02:13,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128369342]
[2021-08-12 20:02:13,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 20:02:13,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:02:13,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 20:02:13,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-08-12 20:02:13,958 INFO L87 Difference]: Start difference. First operand 1881 states and 6422 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:14,727 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39
[2021-08-12 20:02:15,049 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65
[2021-08-12 20:02:15,673 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53
[2021-08-12 20:02:16,370 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 53
[2021-08-12 20:02:17,152 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77
[2021-08-12 20:02:17,710 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56
[2021-08-12 20:02:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:02:20,584 INFO L93 Difference]: Finished difference Result 2310 states and 7741 transitions.
[2021-08-12 20:02:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-08-12 20:02:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:02:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:02:20,591 INFO L225 Difference]: With dead ends: 2310
[2021-08-12 20:02:20,591 INFO L226 Difference]: Without dead ends: 2293
[2021-08-12 20:02:20,591 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2882.2ms TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190
[2021-08-12 20:02:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states.
[2021-08-12 20:02:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1873.
[2021-08-12 20:02:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 3.419337606837607) internal successors, (6401), 1872 states have internal predecessors, (6401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 6401 transitions.
[2021-08-12 20:02:21,628 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 6401 transitions. Word has length 26
[2021-08-12 20:02:21,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:02:21,628 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 6401 transitions.
[2021-08-12 20:02:21,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 6401 transitions.
[2021-08-12 20:02:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:02:21,631 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:02:21,631 INFO L550 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]
[2021-08-12 20:02:21,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2617
[2021-08-12 20:02:21,855 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:02:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:02:21,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1033146674, now seen corresponding path program 31 times
[2021-08-12 20:02:21,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:02:21,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245995132]
[2021-08-12 20:02:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:02:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:02:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:22,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:02:22,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245995132]
[2021-08-12 20:02:22,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245995132] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:22,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306733733]
[2021-08-12 20:02:22,395 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 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
[2021-08-12 20:02:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:02:22,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 20:02:22,437 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:02:22,810 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,811 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,812 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:02:22,813 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,817 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,818 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:02:22,819 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,823 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,823 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,825 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:02:22,826 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,829 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,829 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,830 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:02:22,831 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,835 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,835 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,836 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 20:02:22,837 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,841 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,842 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:22,843 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,847 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,848 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:22,851 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,858 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,859 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:02:22,860 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,864 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,864 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,865 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:02:22,866 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,869 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,870 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,871 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:22,872 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,875 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,877 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:02:22,878 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,881 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,882 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:02:22,884 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,887 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,888 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:22,890 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,893 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,893 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,894 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:02:22,895 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:22,898 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:22,898 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:22,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:02:22,899 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:23,002 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23
[2021-08-12 20:02:23,002 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 20:02:23,003 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:02:23,003 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 20:02:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:23,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306733733] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:23,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:02:23,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-08-12 20:02:23,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40893466]
[2021-08-12 20:02:23,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-08-12 20:02:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:02:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-08-12 20:02:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240
[2021-08-12 20:02:23,067 INFO L87 Difference]: Start difference. First operand 1873 states and 6401 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:02:27,321 INFO L93 Difference]: Finished difference Result 2213 states and 7447 transitions.
[2021-08-12 20:02:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-08-12 20:02:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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
[2021-08-12 20:02:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:02:27,328 INFO L225 Difference]: With dead ends: 2213
[2021-08-12 20:02:27,328 INFO L226 Difference]: Without dead ends: 2196
[2021-08-12 20:02:27,328 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 939.2ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2021-08-12 20:02:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states.
[2021-08-12 20:02:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1867.
[2021-08-12 20:02:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 3.4190782422293675) internal successors, (6380), 1866 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6380 transitions.
[2021-08-12 20:02:28,369 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6380 transitions. Word has length 26
[2021-08-12 20:02:28,369 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:02:28,369 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 6380 transitions.
[2021-08-12 20:02:28,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:28,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6380 transitions.
[2021-08-12 20:02:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:02:28,385 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:02:28,385 INFO L550 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]
[2021-08-12 20:02:28,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2630
[2021-08-12 20:02:28,601 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:02:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:02:28,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1034369354, now seen corresponding path program 32 times
[2021-08-12 20:02:28,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:02:28,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208299377]
[2021-08-12 20:02:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:02:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:02:28,955 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34
[2021-08-12 20:02:29,106 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44
[2021-08-12 20:02:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:29,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:02:29,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208299377]
[2021-08-12 20:02:29,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208299377] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:29,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604998572]
[2021-08-12 20:02:29,309 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 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
[2021-08-12 20:02:29,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 20:02:29,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:02:29,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 20:02:29,380 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:02:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,720 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:29,721 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,726 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:29,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 20:02:29,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,762 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:02:29,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:02:29,764 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,779 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:02:29,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 20:02:29,781 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,793 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:02:29,794 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,799 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,807 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:29,808 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,821 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:29,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:02:29,826 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,831 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,837 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 20:02:29,838 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,843 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:29,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 20:02:29,853 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,858 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:29,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:02:29,870 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,875 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,881 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:02:29,882 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,893 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:02:29,894 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,898 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,904 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:02:29,905 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:29,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:02:29,919 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,923 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,928 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:02:29,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 20:02:29,929 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:29,933 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:29,939 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:02:29,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:02:29,941 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:30,045 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 36
[2021-08-12 20:02:30,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:30,088 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:02:30,089 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:174
[2021-08-12 20:02:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:30,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604998572] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:30,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:02:30,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17
[2021-08-12 20:02:30,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440732853]
[2021-08-12 20:02:30,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-08-12 20:02:30,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:02:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-08-12 20:02:30,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2021-08-12 20:02:30,333 INFO L87 Difference]: Start difference. First operand 1867 states and 6380 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:31,063 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44
[2021-08-12 20:02:31,715 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48
[2021-08-12 20:02:32,377 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56
[2021-08-12 20:02:34,744 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51
[2021-08-12 20:02:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:02:37,502 INFO L93 Difference]: Finished difference Result 2786 states and 9271 transitions.
[2021-08-12 20:02:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-08-12 20:02:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:02:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:02:37,510 INFO L225 Difference]: With dead ends: 2786
[2021-08-12 20:02:37,510 INFO L226 Difference]: Without dead ends: 2769
[2021-08-12 20:02:37,510 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2644.3ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122
[2021-08-12 20:02:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states.
[2021-08-12 20:02:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1864.
[2021-08-12 20:02:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 3.416532474503489) internal successors, (6365), 1863 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 6365 transitions.
[2021-08-12 20:02:38,585 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 6365 transitions. Word has length 26
[2021-08-12 20:02:38,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:02:38,585 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 6365 transitions.
[2021-08-12 20:02:38,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 6365 transitions.
[2021-08-12 20:02:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:02:38,589 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:02:38,589 INFO L550 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]
[2021-08-12 20:02:38,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2658
[2021-08-12 20:02:38,814 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:02:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:02:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1269968860, now seen corresponding path program 33 times
[2021-08-12 20:02:38,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:02:38,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227328650]
[2021-08-12 20:02:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:02:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:02:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:39,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:02:39,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227328650]
[2021-08-12 20:02:39,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227328650] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:39,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327904124]
[2021-08-12 20:02:39,348 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 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
[2021-08-12 20:02:39,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 20:02:39,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:02:39,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 20:02:39,385 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:02:39,774 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 48
[2021-08-12 20:02:40,050 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55
[2021-08-12 20:02:40,175 INFO L446 ElimStorePlain]: Different costs {1=[A, v_prenex_201], 2=[v_prenex_199, v_prenex_200]}
[2021-08-12 20:02:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:40,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-08-12 20:02:40,182 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:40,338 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54
[2021-08-12 20:02:40,338 INFO L628 ElimStorePlain]: treesize reduction 54, result has 73.9 percent of original size
[2021-08-12 20:02:40,343 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:40,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:02:40,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:40,409 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:40,413 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:40,414 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:40,415 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:40,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:40,417 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:40,422 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:40,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:02:40,424 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:40,478 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:40,483 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:40,483 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:02:40,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:02:40,485 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:40,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:40,539 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:02:40,540 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:217, output treesize:51
[2021-08-12 20:02:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:40,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327904124] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:40,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:02:40,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17
[2021-08-12 20:02:40,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856225922]
[2021-08-12 20:02:40,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-08-12 20:02:40,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:02:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-08-12 20:02:40,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2021-08-12 20:02:40,611 INFO L87 Difference]: Start difference. First operand 1864 states and 6365 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:41,013 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39
[2021-08-12 20:02:41,492 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39
[2021-08-12 20:02:43,103 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 52
[2021-08-12 20:02:44,266 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64
[2021-08-12 20:02:44,686 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63
[2021-08-12 20:02:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:02:47,709 INFO L93 Difference]: Finished difference Result 2482 states and 8312 transitions.
[2021-08-12 20:02:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-08-12 20:02:47,710 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:02:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:02:47,718 INFO L225 Difference]: With dead ends: 2482
[2021-08-12 20:02:47,718 INFO L226 Difference]: Without dead ends: 2465
[2021-08-12 20:02:47,719 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 3187.6ms TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190
[2021-08-12 20:02:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states.
[2021-08-12 20:02:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1863.
[2021-08-12 20:02:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4162191192266382) internal successors, (6361), 1862 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6361 transitions.
[2021-08-12 20:02:48,688 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6361 transitions. Word has length 26
[2021-08-12 20:02:48,688 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:02:48,688 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6361 transitions.
[2021-08-12 20:02:48,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6361 transitions.
[2021-08-12 20:02:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:02:48,691 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:02:48,691 INFO L550 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]
[2021-08-12 20:02:48,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2695
[2021-08-12 20:02:48,915 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:02:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:02:48,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1946185846, now seen corresponding path program 34 times
[2021-08-12 20:02:48,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:02:48,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883577141]
[2021-08-12 20:02:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:02:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:02:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:49,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:02:49,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883577141]
[2021-08-12 20:02:49,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883577141] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:49,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802830062]
[2021-08-12 20:02:49,316 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 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
[2021-08-12 20:02:49,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 20:02:49,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:02:49,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-08-12 20:02:49,350 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:02:49,646 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2021-08-12 20:02:49,759 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:49,767 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:02:49,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 20:02:49,768 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:49,888 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2021-08-12 20:02:49,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:49,895 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:49,902 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:02:49,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:02:49,904 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,029 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2021-08-12 20:02:50,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,036 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:50,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:02:50,045 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,177 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2021-08-12 20:02:50,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,183 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:50,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:02:50,194 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,302 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2021-08-12 20:02:50,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,308 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:50,314 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 20:02:50,318 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,432 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93
[2021-08-12 20:02:50,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,438 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:50,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:02:50,445 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,677 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 87
[2021-08-12 20:02:50,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,683 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:50,689 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 20:02:50,691 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,794 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:02:50,800 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:02:50,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:02:50,802 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:02:50,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:02:50,902 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:02:50,902 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174
[2021-08-12 20:02:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:02:51,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802830062] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:02:51,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:02:51,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17
[2021-08-12 20:02:51,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041583368]
[2021-08-12 20:02:51,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-08-12 20:02:51,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:02:51,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-08-12 20:02:51,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272
[2021-08-12 20:02:51,092 INFO L87 Difference]: Start difference. First operand 1863 states and 6361 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:51,787 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42
[2021-08-12 20:02:52,410 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49
[2021-08-12 20:02:53,277 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 53
[2021-08-12 20:02:54,529 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57
[2021-08-12 20:02:55,035 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61
[2021-08-12 20:02:55,258 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48
[2021-08-12 20:02:56,302 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49
[2021-08-12 20:02:56,484 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41
[2021-08-12 20:02:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:02:59,045 INFO L93 Difference]: Finished difference Result 2970 states and 9770 transitions.
[2021-08-12 20:02:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2021-08-12 20:02:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:02:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:02:59,052 INFO L225 Difference]: With dead ends: 2970
[2021-08-12 20:02:59,052 INFO L226 Difference]: Without dead ends: 2938
[2021-08-12 20:02:59,052 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3363.0ms TimeCoverageRelationStatistics Valid=276, Invalid=984, Unknown=0, NotChecked=0, Total=1260
[2021-08-12 20:02:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states.
[2021-08-12 20:02:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1863.
[2021-08-12 20:02:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4183673469387754) internal successors, (6365), 1862 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6365 transitions.
[2021-08-12 20:02:59,878 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6365 transitions. Word has length 26
[2021-08-12 20:02:59,879 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:02:59,879 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6365 transitions.
[2021-08-12 20:02:59,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:02:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6365 transitions.
[2021-08-12 20:02:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:02:59,881 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:02:59,881 INFO L550 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]
[2021-08-12 20:03:00,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2704,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:03:00,082 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash 663462910, now seen corresponding path program 35 times
[2021-08-12 20:03:00,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:00,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813749137]
[2021-08-12 20:03:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:00,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:00,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813749137]
[2021-08-12 20:03:00,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813749137] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:00,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004971716]
[2021-08-12 20:03:00,473 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 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
[2021-08-12 20:03:00,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 20:03:00,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:03:00,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 20:03:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:00,890 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,890 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,892 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:03:00,893 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,897 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,897 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,899 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:00,901 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,904 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,905 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,907 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:00,908 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,912 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,913 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,915 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:00,916 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,919 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,920 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,922 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:03:00,923 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,926 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,926 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,928 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:00,929 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,933 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,935 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:00,936 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,939 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,941 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:00,942 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,946 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,948 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:00,949 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,952 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,953 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,955 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:00,956 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,959 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,959 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,961 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:03:00,963 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,967 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,967 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,969 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 20:03:00,970 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,973 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,974 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,976 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:00,977 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,980 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,982 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:00,983 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:00,986 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:00,986 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:00,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:03:00,987 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:01,067 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 20:03:01,068 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:03:01,068 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 20:03:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:01,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004971716] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:01,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:01,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 20:03:01,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79212677]
[2021-08-12 20:03:01,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 20:03:01,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:01,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 20:03:01,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380
[2021-08-12 20:03:01,124 INFO L87 Difference]: Start difference. First operand 1863 states and 6365 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:01,712 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39
[2021-08-12 20:03:02,220 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2021-08-12 20:03:02,585 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46
[2021-08-12 20:03:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:03:05,432 INFO L93 Difference]: Finished difference Result 2376 states and 7934 transitions.
[2021-08-12 20:03:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-08-12 20:03:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 20:03:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:03:05,438 INFO L225 Difference]: With dead ends: 2376
[2021-08-12 20:03:05,438 INFO L226 Difference]: Without dead ends: 2353
[2021-08-12 20:03:05,438 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1522.8ms TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056
[2021-08-12 20:03:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states.
[2021-08-12 20:03:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1878.
[2021-08-12 20:03:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 3.4214171550346295) internal successors, (6422), 1877 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 6422 transitions.
[2021-08-12 20:03:06,308 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 6422 transitions. Word has length 26
[2021-08-12 20:03:06,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:03:06,308 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 6422 transitions.
[2021-08-12 20:03:06,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 6422 transitions.
[2021-08-12 20:03:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:03:06,312 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:03:06,312 INFO L550 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]
[2021-08-12 20:03:06,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2719,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:03:06,516 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash -716780640, now seen corresponding path program 36 times
[2021-08-12 20:03:06,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:06,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082035423]
[2021-08-12 20:03:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:06,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:06,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082035423]
[2021-08-12 20:03:06,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082035423] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:06,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828193498]
[2021-08-12 20:03:06,776 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 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
[2021-08-12 20:03:06,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-08-12 20:03:06,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:03:06,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 20:03:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:07,191 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:03:07,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 20:03:07,193 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,205 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:07,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,226 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:03:07,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28
[2021-08-12 20:03:07,230 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,239 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 20:03:07,240 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,256 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:07,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 20:03:07,259 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,276 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 20:03:07,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:03:07,277 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,287 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:07,288 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,307 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:03:07,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 20:03:07,311 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,320 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:07,321 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,330 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:07,331 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,340 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:07,340 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,349 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:07,350 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,359 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-08-12 20:03:07,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 20:03:07,360 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:07,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 20:03:07,380 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,395 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:07,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 20:03:07,397 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,411 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 20:03:07,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 20:03:07,412 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:07,513 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 40
[2021-08-12 20:03:07,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:07,525 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:03:07,525 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:255
[2021-08-12 20:03:07,700 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38
[2021-08-12 20:03:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:07,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828193498] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:07,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:07,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18
[2021-08-12 20:03:07,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986356452]
[2021-08-12 20:03:07,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-08-12 20:03:07,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-08-12 20:03:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306
[2021-08-12 20:03:07,801 INFO L87 Difference]: Start difference. First operand 1878 states and 6422 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:03:13,365 INFO L93 Difference]: Finished difference Result 2456 states and 8041 transitions.
[2021-08-12 20:03:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-08-12 20:03:13,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:03:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:03:13,370 INFO L225 Difference]: With dead ends: 2456
[2021-08-12 20:03:13,370 INFO L226 Difference]: Without dead ends: 2416
[2021-08-12 20:03:13,371 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2017.0ms TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332
[2021-08-12 20:03:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states.
[2021-08-12 20:03:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1866.
[2021-08-12 20:03:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.420911528150134) internal successors, (6380), 1865 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6380 transitions.
[2021-08-12 20:03:14,142 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6380 transitions. Word has length 26
[2021-08-12 20:03:14,142 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:03:14,142 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6380 transitions.
[2021-08-12 20:03:14,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:14,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6380 transitions.
[2021-08-12 20:03:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:03:14,146 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:03:14,146 INFO L550 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]
[2021-08-12 20:03:14,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2747,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:03:14,361 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:14,361 INFO L82 PathProgramCache]: Analyzing trace with hash 475685792, now seen corresponding path program 37 times
[2021-08-12 20:03:14,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:14,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236497656]
[2021-08-12 20:03:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:14,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:14,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236497656]
[2021-08-12 20:03:14,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236497656] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:14,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337903711]
[2021-08-12 20:03:14,638 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 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
[2021-08-12 20:03:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:14,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:03:14,665 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:14,911 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:14,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:03:14,920 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:14,924 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,929 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:14,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:14,930 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:14,934 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:14,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:03:14,945 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:14,950 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:14,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:03:14,960 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:14,964 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,972 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:03:14,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:03:14,974 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:14,978 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,986 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:03:14,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:03:14,988 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:14,993 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:14,998 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:14,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:14,999 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,004 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,010 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:15,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:15,011 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,015 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,020 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:15,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-08-12 20:03:15,021 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,025 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,033 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:03:15,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-08-12 20:03:15,034 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,039 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,046 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:15,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 20:03:15,048 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,053 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,058 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:15,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-08-12 20:03:15,059 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,069 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:15,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:15,070 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,079 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:15,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:15,080 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,084 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,090 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:15,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-08-12 20:03:15,094 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:15,100 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-08-12 20:03:15,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:15,101 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:15,220 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 35
[2021-08-12 20:03:15,220 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:15,226 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:03:15,226 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:705, output treesize:180
[2021-08-12 20:03:15,389 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32
[2021-08-12 20:03:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:15,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337903711] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:15,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:15,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-08-12 20:03:15,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761249444]
[2021-08-12 20:03:15,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-08-12 20:03:15,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:15,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-08-12 20:03:15,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240
[2021-08-12 20:03:15,487 INFO L87 Difference]: Start difference. First operand 1866 states and 6380 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:16,385 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47
[2021-08-12 20:03:17,871 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27
[2021-08-12 20:03:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:03:19,887 INFO L93 Difference]: Finished difference Result 2284 states and 7606 transitions.
[2021-08-12 20:03:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2021-08-12 20:03:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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
[2021-08-12 20:03:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:03:19,894 INFO L225 Difference]: With dead ends: 2284
[2021-08-12 20:03:19,894 INFO L226 Difference]: Without dead ends: 2257
[2021-08-12 20:03:19,894 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 960.3ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380
[2021-08-12 20:03:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states.
[2021-08-12 20:03:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1857.
[2021-08-12 20:03:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 3.4132543103448274) internal successors, (6335), 1856 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 6335 transitions.
[2021-08-12 20:03:20,952 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 6335 transitions. Word has length 26
[2021-08-12 20:03:20,952 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:03:20,952 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 6335 transitions.
[2021-08-12 20:03:20,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 6335 transitions.
[2021-08-12 20:03:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:03:20,955 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:03:20,955 INFO L550 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]
[2021-08-12 20:03:21,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2798
[2021-08-12 20:03:21,179 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1353247494, now seen corresponding path program 38 times
[2021-08-12 20:03:21,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:21,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7041072]
[2021-08-12 20:03:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:21,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:21,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7041072]
[2021-08-12 20:03:21,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7041072] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:21,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775678414]
[2021-08-12 20:03:21,568 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 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
[2021-08-12 20:03:21,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-08-12 20:03:21,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:03:21,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:03:21,604 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:22,005 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,005 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,007 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:22,008 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,012 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,013 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,014 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:22,015 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,023 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,024 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,025 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 20:03:22,027 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,031 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,031 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,033 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:22,034 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,038 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,038 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,039 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:22,041 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,045 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,046 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,047 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:03:22,048 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,052 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,053 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,054 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:03:22,056 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,060 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,061 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,062 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:22,064 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,068 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,069 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,070 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:22,071 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,075 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,076 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,079 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:03:22,080 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,084 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,084 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,085 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:22,087 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,090 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,091 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,092 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:22,093 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,099 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,099 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,101 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:03:22,102 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,106 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,107 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,108 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:22,109 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,113 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:22,113 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:22,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:22,115 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:22,210 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 20:03:22,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:03:22,212 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 20:03:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:22,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775678414] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:22,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:22,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-08-12 20:03:22,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326318347]
[2021-08-12 20:03:22,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-08-12 20:03:22,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:22,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-08-12 20:03:22,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240
[2021-08-12 20:03:22,280 INFO L87 Difference]: Start difference. First operand 1857 states and 6335 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:03:25,117 INFO L93 Difference]: Finished difference Result 1945 states and 6539 transitions.
[2021-08-12 20:03:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-08-12 20:03:25,118 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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
[2021-08-12 20:03:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:03:25,122 INFO L225 Difference]: With dead ends: 1945
[2021-08-12 20:03:25,122 INFO L226 Difference]: Without dead ends: 1924
[2021-08-12 20:03:25,123 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 648.2ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2021-08-12 20:03:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states.
[2021-08-12 20:03:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1834.
[2021-08-12 20:03:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.413529732678669) internal successors, (6257), 1833 states have internal predecessors, (6257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6257 transitions.
[2021-08-12 20:03:25,905 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6257 transitions. Word has length 26
[2021-08-12 20:03:25,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:03:25,905 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 6257 transitions.
[2021-08-12 20:03:25,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6257 transitions.
[2021-08-12 20:03:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:03:25,908 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:03:25,908 INFO L550 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]
[2021-08-12 20:03:26,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2839,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:03:26,108 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 794427266, now seen corresponding path program 39 times
[2021-08-12 20:03:26,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:26,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879525678]
[2021-08-12 20:03:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:26,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:26,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879525678]
[2021-08-12 20:03:26,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879525678] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:26,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343703700]
[2021-08-12 20:03:26,377 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 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
[2021-08-12 20:03:26,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-08-12 20:03:26,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:03:26,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-08-12 20:03:26,405 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:26,833 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:03:26,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-08-12 20:03:26,837 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:26,858 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:03:26,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-08-12 20:03:26,859 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,012 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2021-08-12 20:03:27,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:27,031 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:27,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32
[2021-08-12 20:03:27,037 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,043 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:27,056 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 20:03:27,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-08-12 20:03:27,058 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,347 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69
[2021-08-12 20:03:27,347 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size
[2021-08-12 20:03:27,354 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:27,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:27,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-08-12 20:03:27,370 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:27,391 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-08-12 20:03:27,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31
[2021-08-12 20:03:27,392 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,667 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62
[2021-08-12 20:03:27,668 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.1 percent of original size
[2021-08-12 20:03:27,674 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:27,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:27,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-08-12 20:03:27,692 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,698 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:27,709 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-08-12 20:03:27,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-08-12 20:03:27,710 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:27,832 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55
[2021-08-12 20:03:27,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:27,850 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:03:27,850 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:253
[2021-08-12 20:03:28,051 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42
[2021-08-12 20:03:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:28,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343703700] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:28,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:28,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19
[2021-08-12 20:03:28,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751956714]
[2021-08-12 20:03:28,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-08-12 20:03:28,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:28,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-08-12 20:03:28,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342
[2021-08-12 20:03:28,151 INFO L87 Difference]: Start difference. First operand 1834 states and 6257 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:29,381 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48
[2021-08-12 20:03:30,368 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30
[2021-08-12 20:03:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:03:32,183 INFO L93 Difference]: Finished difference Result 2043 states and 6858 transitions.
[2021-08-12 20:03:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-08-12 20:03:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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
[2021-08-12 20:03:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:03:32,189 INFO L225 Difference]: With dead ends: 2043
[2021-08-12 20:03:32,189 INFO L226 Difference]: Without dead ends: 2016
[2021-08-12 20:03:32,190 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1355.2ms TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702
[2021-08-12 20:03:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states.
[2021-08-12 20:03:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1816.
[2021-08-12 20:03:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 3.41763085399449) internal successors, (6203), 1815 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 6203 transitions.
[2021-08-12 20:03:33,247 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 6203 transitions. Word has length 26
[2021-08-12 20:03:33,247 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:03:33,247 INFO L482 AbstractCegarLoop]: Abstraction has 1816 states and 6203 transitions.
[2021-08-12 20:03:33,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:33,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 6203 transitions.
[2021-08-12 20:03:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:03:33,250 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:03:33,250 INFO L550 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]
[2021-08-12 20:03:33,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2867
[2021-08-12 20:03:33,457 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1247883966, now seen corresponding path program 40 times
[2021-08-12 20:03:33,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:33,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752674633]
[2021-08-12 20:03:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:33,825 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29
[2021-08-12 20:03:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:34,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:34,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752674633]
[2021-08-12 20:03:34,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752674633] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:34,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495341292]
[2021-08-12 20:03:34,001 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 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
[2021-08-12 20:03:34,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-08-12 20:03:34,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:03:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-08-12 20:03:34,098 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:34,401 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 42
[2021-08-12 20:03:34,622 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65
[2021-08-12 20:03:34,747 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_232], 3=[v_prenex_233, v_prenex_234]}
[2021-08-12 20:03:34,753 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:34,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:34,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:03:34,765 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:34,771 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:34,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:34,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-08-12 20:03:34,781 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:34,956 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 80
[2021-08-12 20:03:34,957 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:34,963 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:34,974 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:34,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-08-12 20:03:34,976 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:34,982 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:34,990 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-08-12 20:03:34,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-08-12 20:03:34,992 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:35,155 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 74
[2021-08-12 20:03:35,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:35,163 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,164 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,174 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 20:03:35,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22
[2021-08-12 20:03:35,176 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:35,184 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,185 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,191 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:35,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26
[2021-08-12 20:03:35,196 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:35,342 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 67
[2021-08-12 20:03:35,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:35,349 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,349 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:35,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20
[2021-08-12 20:03:35,391 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:35,399 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,400 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:35,406 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-08-12 20:03:35,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19
[2021-08-12 20:03:35,408 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:35,545 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 60
[2021-08-12 20:03:35,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-08-12 20:03:35,555 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-08-12 20:03:35,555 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:361, output treesize:194
[2021-08-12 20:03:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:35,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495341292] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:35,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:35,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17
[2021-08-12 20:03:35,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756922358]
[2021-08-12 20:03:35,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-08-12 20:03:35,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-08-12 20:03:35,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272
[2021-08-12 20:03:35,784 INFO L87 Difference]: Start difference. First operand 1816 states and 6203 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:36,101 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37
[2021-08-12 20:03:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-08-12 20:03:39,703 INFO L93 Difference]: Finished difference Result 2325 states and 7790 transitions.
[2021-08-12 20:03:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-08-12 20:03:39,704 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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
[2021-08-12 20:03:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-08-12 20:03:39,709 INFO L225 Difference]: With dead ends: 2325
[2021-08-12 20:03:39,709 INFO L226 Difference]: Without dead ends: 2298
[2021-08-12 20:03:39,710 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1628.6ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600
[2021-08-12 20:03:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states.
[2021-08-12 20:03:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1804.
[2021-08-12 20:03:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 3.4170826400443706) internal successors, (6161), 1803 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:40,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 6161 transitions.
[2021-08-12 20:03:40,495 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 6161 transitions. Word has length 26
[2021-08-12 20:03:40,495 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-08-12 20:03:40,495 INFO L482 AbstractCegarLoop]: Abstraction has 1804 states and 6161 transitions.
[2021-08-12 20:03:40,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-08-12 20:03:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 6161 transitions.
[2021-08-12 20:03:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-08-12 20:03:40,498 INFO L542 BasicCegarLoop]: Found error trace
[2021-08-12 20:03:40,498 INFO L550 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]
[2021-08-12 20:03:40,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2923,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:03:40,698 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-08-12 20:03:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-08-12 20:03:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash 305289786, now seen corresponding path program 41 times
[2021-08-12 20:03:40,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-08-12 20:03:40,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825558483]
[2021-08-12 20:03:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-08-12 20:03:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-08-12 20:03:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:41,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-08-12 20:03:41,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825558483]
[2021-08-12 20:03:41,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825558483] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:41,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417438157]
[2021-08-12 20:03:41,062 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 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
[2021-08-12 20:03:41,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-08-12 20:03:41,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-08-12 20:03:41,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-08-12 20:03:41,098 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-08-12 20:03:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,493 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,494 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:41,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,499 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,500 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:41,501 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,505 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,505 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,506 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:41,507 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,510 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,511 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,512 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:03:41,513 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,516 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,517 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,518 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:41,519 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,522 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,523 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:41,525 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,530 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-08-12 20:03:41,530 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,534 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,534 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,535 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:03:41,537 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,540 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,540 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,541 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:41,543 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,546 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,546 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,547 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-08-12 20:03:41,548 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,552 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,552 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,553 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-08-12 20:03:41,554 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,557 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,558 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,559 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:41,560 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,563 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,564 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,565 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-08-12 20:03:41,566 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,569 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,569 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,570 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-08-12 20:03:41,571 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-08-12 20:03:41,574 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-08-12 20:03:41,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-08-12 20:03:41,575 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-08-12 20:03:41,654 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-08-12 20:03:41,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-08-12 20:03:41,656 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-08-12 20:03:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-08-12 20:03:41,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417438157] provided 0 perfect and 1 imperfect interpolant sequences
[2021-08-12 20:03:41,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-08-12 20:03:41,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-08-12 20:03:41,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772011133]
[2021-08-12 20:03:41,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-08-12 20:03:41,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-08-12 20:03:41,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-08-12 20:03:41,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380
[2021-08-12 20:03:41,711 INFO L87 Difference]: Start difference. First operand 1804 states and 6161 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
Received shutdown request...
[2021-08-12 20:03:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-08-12 20:03:42,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2955,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-08-12 20:03:42,035 WARN L547 AbstractCegarLoop]: Verification canceled
[2021-08-12 20:03:42,037 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2021-08-12 20:03:42,038 WARN L188 ceAbstractionStarter]: Timeout
[2021-08-12 20:03:42,039 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 08:03:42 BasicIcfg
[2021-08-12 20:03:42,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-08-12 20:03:42,039 INFO L168 Benchmark]: Toolchain (without parser) took 532566.48 ms. Allocated memory was 178.3 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 159.3 MB in the beginning and 561.5 MB in the end (delta: -402.3 MB). Peak memory consumption was 660.0 MB. Max. memory is 8.0 GB.
[2021-08-12 20:03:42,039 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 160.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-08-12 20:03:42,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.10 ms. Allocated memory is still 178.3 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-08-12 20:03:42,039 INFO L168 Benchmark]: Boogie Preprocessor took 24.18 ms. Allocated memory is still 178.3 MB. Free memory was 157.8 MB in the beginning and 156.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-08-12 20:03:42,039 INFO L168 Benchmark]: RCFGBuilder took 317.13 ms. Allocated memory is still 178.3 MB. Free memory was 156.7 MB in the beginning and 143.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
[2021-08-12 20:03:42,040 INFO L168 Benchmark]: TraceAbstraction took 532192.34 ms. Allocated memory was 178.3 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 143.1 MB in the beginning and 561.5 MB in the end (delta: -418.4 MB). Peak memory consumption was 643.2 MB. Max. memory is 8.0 GB.
[2021-08-12 20:03:42,040 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 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 160.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
* Boogie Procedure Inliner took 27.10 ms. Allocated memory is still 178.3 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 24.18 ms. Allocated memory is still 178.3 MB. Free memory was 157.8 MB in the beginning and 156.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 317.13 ms. Allocated memory is still 178.3 MB. Free memory was 156.7 MB in the beginning and 143.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 532192.34 ms. Allocated memory was 178.3 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 143.1 MB in the beginning and 561.5 MB in the end (delta: -418.4 MB). Peak memory consumption was 643.2 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (1804states) and FLOYD_HOARE automaton (currently 7 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 532097.7ms, OverallIterations: 98, TraceHistogramMax: 2, EmptinessCheckTime: 230.7ms, AutomataDifference: 361478.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4053 SDtfs, 19500 SDslu, 30647 SDs, 0 SdLazy, 55729 SolverSat, 3309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34575.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5147 GetRequests, 1788 SyntacticMatches, 99 SemanticMatches, 3259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38551 ImplicationChecksByTransitivity, 189097.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1881occurred in iteration=86, InterpolantAutomatonStates: 2559, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 37734.5ms AutomataMinimizationTime, 97 MinimizatonAttempts, 71320 StatesRemovedByMinimization, 97 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 376.5ms SsaConstructionTime, 1400.9ms SatisfiabilityAnalysisTime, 108476.9ms InterpolantComputationTime, 4830 NumberOfCodeBlocks, 4830 NumberOfCodeBlocksAsserted, 307 NumberOfCheckSat, 4637 ConstructedInterpolants, 51 QuantifiedInterpolants, 141833 SizeOfPredicates, 542 NumberOfNonLiveVariables, 6250 ConjunctsInSsa, 1879 ConjunctsInUnsatCore, 193 InterpolantComputations, 3 PerfectInterpolantSequences, 107/1106 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