/usr/bin/java -Xmx16000000000 -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/prod-cons3.wvr.bpl
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788
[2021-06-01 19:32:58,403 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2021-06-01 19:32:58,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-06-01 19:32:58,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2021-06-01 19:32:58,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-06-01 19:32:58,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values
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[2021-06-01 19:32:58,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-06-01 19:32:58,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf
[2021-06-01 19:32:58,544 INFO L113 SettingsManager]: Loading preferences was successful
[2021-06-01 19:32:58,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-06-01 19:32:58,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-06-01 19:32:58,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-06-01 19:32:58,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-06-01 19:32:58,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-06-01 19:32:58,548 INFO L138 SettingsManager]: * Use SBE=true
[2021-06-01 19:32:58,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-06-01 19:32:58,548 INFO L138 SettingsManager]: * sizeof long=4
[2021-06-01 19:32:58,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-06-01 19:32:58,549 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-06-01 19:32:58,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-06-01 19:32:58,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-06-01 19:32:58,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-06-01 19:32:58,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * sizeof long double=12
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-06-01 19:32:58,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-06-01 19:32:58,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-01 19:32:58,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-06-01 19:32:58,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-06-01 19:32:58,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-06-01 19:32:58,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-06-01 19:32:58,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-06-01 19:32:58,920 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-06-01 19:32:58,921 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2021-06-01 19:32:58,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons3.wvr.bpl
[2021-06-01 19:32:58,922 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons3.wvr.bpl'
[2021-06-01 19:32:58,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-06-01 19:32:58,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-06-01 19:32:58,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-06-01 19:32:58,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-06-01 19:32:58,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-06-01 19:32:58,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:58,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:58,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-06-01 19:32:58,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-06-01 19:32:58,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-06-01 19:32:58,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-06-01 19:32:59,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
[2021-06-01 19:32:59,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-06-01 19:32:59,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-06-01 19:32:59,025 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-06-01 19:32:59,025 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-06-01 19:32:59,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-01 19:32:59,103 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-06-01 19:32:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2021-06-01 19:32:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2021-06-01 19:32:59,104 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-06-01 19:32:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2021-06-01 19:32:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2021-06-01 19:32:59,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-06-01 19:32:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-06-01 19:32:59,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-06-01 19:32:59,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2021-06-01 19:32:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2021-06-01 19:32:59,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2021-06-01 19:32:59,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration
[2021-06-01 19:32:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread4
[2021-06-01 19:32:59,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4
[2021-06-01 19:32:59,108 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-06-01 19:32:59,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-06-01 19:32:59,380 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-06-01 19:32:59,382 INFO L202 PluginConnector]: Adding new model prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 07:32:59 BoogieIcfgContainer
[2021-06-01 19:32:59,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-06-01 19:32:59,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-06-01 19:32:59,385 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-06-01 19:32:59,388 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-06-01 19:32:59,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 07:32:58" (1/2) ...
[2021-06-01 19:32:59,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65631cd5 and model type prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 07:32:59, skipping insertion in model container
[2021-06-01 19:32:59,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 07:32:59" (2/2) ...
[2021-06-01 19:32:59,395 INFO L111 eAbstractionObserver]: Analyzing ICFG prod-cons3.wvr.bpl
[2021-06-01 19:32:59,401 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-06-01 19:32:59,401 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-06-01 19:32:59,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-06-01 19:32:59,402 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-06-01 19:32:59,449 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2021-06-01 19:32:59,468 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2021-06-01 19:32:59,485 INFO L378 AbstractCegarLoop]: Interprodecural is true
[2021-06-01 19:32:59,485 INFO L379 AbstractCegarLoop]: Hoare is false
[2021-06-01 19:32:59,485 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-06-01 19:32:59,485 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-06-01 19:32:59,485 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-06-01 19:32:59,485 INFO L383 AbstractCegarLoop]: Difference is false
[2021-06-01 19:32:59,486 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-06-01 19:32:59,486 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-06-01 19:32:59,494 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 40 transitions, 112 flow
[2021-06-01 19:32:59,564 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 755 states, 753 states have (on average 3.634794156706507) internal successors, (2737), 754 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:32:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 755 states, 753 states have (on average 3.634794156706507) internal successors, (2737), 754 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:32:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-06-01 19:32:59,600 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:32:59,601 INFO L554 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]
[2021-06-01 19:32:59,602 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:32:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:32:59,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1590059923, now seen corresponding path program 1 times
[2021-06-01 19:32:59,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:32:59,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800472682]
[2021-06-01 19:32:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:32:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:32:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:32:59,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:32:59,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800472682]
[2021-06-01 19:32:59,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800472682] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 19:32:59,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 19:32:59,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-06-01 19:32:59,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320263569]
[2021-06-01 19:32:59,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-06-01 19:32:59,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:32:59,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-06-01 19:32:59,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-06-01 19:32:59,789 INFO L87 Difference]: Start difference. First operand has 755 states, 753 states have (on average 3.634794156706507) internal successors, (2737), 754 states have internal predecessors, (2737), 0 states have call successors, (0), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:32:59,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:32:59,864 INFO L93 Difference]: Finished difference Result 912 states and 3051 transitions.
[2021-06-01 19:32:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-06-01 19:32:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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
[2021-06-01 19:32:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:32:59,890 INFO L225 Difference]: With dead ends: 912
[2021-06-01 19:32:59,890 INFO L226 Difference]: Without dead ends: 539
[2021-06-01 19:32:59,892 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-06-01 19:32:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states.
[2021-06-01 19:32:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539.
[2021-06-01 19:32:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 3.163568773234201) internal successors, (1702), 538 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:32:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1702 transitions.
[2021-06-01 19:32:59,990 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1702 transitions. Word has length 24
[2021-06-01 19:32:59,992 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:32:59,992 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1702 transitions.
[2021-06-01 19:32:59,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:32:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1702 transitions.
[2021-06-01 19:32:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-06-01 19:32:59,996 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:32:59,997 INFO L554 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]
[2021-06-01 19:32:59,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-06-01 19:32:59,998 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2041716967, now seen corresponding path program 2 times
[2021-06-01 19:33:00,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:00,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029144449]
[2021-06-01 19:33:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:00,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:00,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029144449]
[2021-06-01 19:33:00,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029144449] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 19:33:00,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 19:33:00,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-06-01 19:33:00,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117222366]
[2021-06-01 19:33:00,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-06-01 19:33:00,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:00,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-06-01 19:33:00,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-06-01 19:33:00,084 INFO L87 Difference]: Start difference. First operand 539 states and 1702 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:00,159 INFO L93 Difference]: Finished difference Result 863 states and 2726 transitions.
[2021-06-01 19:33:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-06-01 19:33:00,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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
[2021-06-01 19:33:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:00,164 INFO L225 Difference]: With dead ends: 863
[2021-06-01 19:33:00,165 INFO L226 Difference]: Without dead ends: 671
[2021-06-01 19:33:00,166 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-06-01 19:33:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states.
[2021-06-01 19:33:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671.
[2021-06-01 19:33:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 3.2208955223880595) internal successors, (2158), 670 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 2158 transitions.
[2021-06-01 19:33:00,191 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 2158 transitions. Word has length 24
[2021-06-01 19:33:00,191 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:00,192 INFO L482 AbstractCegarLoop]: Abstraction has 671 states and 2158 transitions.
[2021-06-01 19:33:00,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 2158 transitions.
[2021-06-01 19:33:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-06-01 19:33:00,195 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:00,196 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:00,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-06-01 19:33:00,197 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:00,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1345429901, now seen corresponding path program 1 times
[2021-06-01 19:33:00,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:00,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744383473]
[2021-06-01 19:33:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:00,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:00,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744383473]
[2021-06-01 19:33:00,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744383473] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 19:33:00,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 19:33:00,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-06-01 19:33:00,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173906996]
[2021-06-01 19:33:00,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-06-01 19:33:00,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-06-01 19:33:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-06-01 19:33:00,257 INFO L87 Difference]: Start difference. First operand 671 states and 2158 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:00,271 INFO L93 Difference]: Finished difference Result 752 states and 2398 transitions.
[2021-06-01 19:33:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-06-01 19:33:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2021-06-01 19:33:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:00,279 INFO L225 Difference]: With dead ends: 752
[2021-06-01 19:33:00,280 INFO L226 Difference]: Without dead ends: 752
[2021-06-01 19:33:00,284 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-06-01 19:33:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states.
[2021-06-01 19:33:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752.
[2021-06-01 19:33:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.193075898801598) internal successors, (2398), 751 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2398 transitions.
[2021-06-01 19:33:00,314 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2398 transitions. Word has length 27
[2021-06-01 19:33:00,314 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:00,314 INFO L482 AbstractCegarLoop]: Abstraction has 752 states and 2398 transitions.
[2021-06-01 19:33:00,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2398 transitions.
[2021-06-01 19:33:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-06-01 19:33:00,317 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:00,317 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:00,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-06-01 19:33:00,318 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash 125377968, now seen corresponding path program 1 times
[2021-06-01 19:33:00,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:00,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957743626]
[2021-06-01 19:33:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-01 19:33:00,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:00,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957743626]
[2021-06-01 19:33:00,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957743626] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 19:33:00,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-01 19:33:00,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-06-01 19:33:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871428544]
[2021-06-01 19:33:00,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-06-01 19:33:00,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-06-01 19:33:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-06-01 19:33:00,354 INFO L87 Difference]: Start difference. First operand 752 states and 2398 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:00,363 INFO L93 Difference]: Finished difference Result 800 states and 2514 transitions.
[2021-06-01 19:33:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-06-01 19:33:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 31
[2021-06-01 19:33:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:00,368 INFO L225 Difference]: With dead ends: 800
[2021-06-01 19:33:00,368 INFO L226 Difference]: Without dead ends: 774
[2021-06-01 19:33:00,369 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-06-01 19:33:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states.
[2021-06-01 19:33:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774.
[2021-06-01 19:33:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 3.1720569210866754) internal successors, (2452), 773 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2452 transitions.
[2021-06-01 19:33:00,394 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2452 transitions. Word has length 31
[2021-06-01 19:33:00,394 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:00,395 INFO L482 AbstractCegarLoop]: Abstraction has 774 states and 2452 transitions.
[2021-06-01 19:33:00,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2452 transitions.
[2021-06-01 19:33:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-06-01 19:33:00,398 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:00,398 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:00,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-06-01 19:33:00,399 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash -308585039, now seen corresponding path program 1 times
[2021-06-01 19:33:00,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:00,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431368536]
[2021-06-01 19:33:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:00,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:00,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431368536]
[2021-06-01 19:33:00,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431368536] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:00,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817976346]
[2021-06-01 19:33:00,738 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
[2021-06-01 19:33:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:00,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-06-01 19:33:00,808 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:01,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-06-01 19:33:01,082 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:01,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:01,090 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:01,090 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13
[2021-06-01 19:33:01,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-06-01 19:33:01,185 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:01,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:01,192 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:01,193 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:10
[2021-06-01 19:33:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:01,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817976346] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:01,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:01,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 23
[2021-06-01 19:33:01,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764133170]
[2021-06-01 19:33:01,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states
[2021-06-01 19:33:01,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:01,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-06-01 19:33:01,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506
[2021-06-01 19:33:01,319 INFO L87 Difference]: Start difference. First operand 774 states and 2452 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:01,952 INFO L93 Difference]: Finished difference Result 1455 states and 4673 transitions.
[2021-06-01 19:33:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-06-01 19:33:01,952 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-06-01 19:33:01,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:01,959 INFO L225 Difference]: With dead ends: 1455
[2021-06-01 19:33:01,959 INFO L226 Difference]: Without dead ends: 1119
[2021-06-01 19:33:01,960 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 546.1ms TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190
[2021-06-01 19:33:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states.
[2021-06-01 19:33:01,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 906.
[2021-06-01 19:33:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 3.2132596685082873) internal successors, (2908), 905 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 2908 transitions.
[2021-06-01 19:33:01,989 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 2908 transitions. Word has length 34
[2021-06-01 19:33:01,989 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:01,989 INFO L482 AbstractCegarLoop]: Abstraction has 906 states and 2908 transitions.
[2021-06-01 19:33:01,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 2908 transitions.
[2021-06-01 19:33:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-06-01 19:33:01,992 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:01,992 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:02,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:02,209 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1659336041, now seen corresponding path program 2 times
[2021-06-01 19:33:02,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:02,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481030395]
[2021-06-01 19:33:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:02,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:02,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481030395]
[2021-06-01 19:33:02,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481030395] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:02,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507636931]
[2021-06-01 19:33:02,252 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
[2021-06-01 19:33:02,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:33:02,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:02,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-06-01 19:33:02,316 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-01 19:33:02,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507636931] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 19:33:02,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-06-01 19:33:02,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5
[2021-06-01 19:33:02,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467790484]
[2021-06-01 19:33:02,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-06-01 19:33:02,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:02,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-06-01 19:33:02,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-06-01 19:33:02,384 INFO L87 Difference]: Start difference. First operand 906 states and 2908 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:02,408 INFO L93 Difference]: Finished difference Result 2380 states and 7576 transitions.
[2021-06-01 19:33:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-06-01 19:33:02,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2021-06-01 19:33:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:02,422 INFO L225 Difference]: With dead ends: 2380
[2021-06-01 19:33:02,422 INFO L226 Difference]: Without dead ends: 2330
[2021-06-01 19:33:02,422 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-06-01 19:33:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states.
[2021-06-01 19:33:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 1654.
[2021-06-01 19:33:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 3.327283726557774) internal successors, (5500), 1653 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 5500 transitions.
[2021-06-01 19:33:02,479 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 5500 transitions. Word has length 37
[2021-06-01 19:33:02,480 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:02,480 INFO L482 AbstractCegarLoop]: Abstraction has 1654 states and 5500 transitions.
[2021-06-01 19:33:02,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 5500 transitions.
[2021-06-01 19:33:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2021-06-01 19:33:02,485 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:02,485 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:02,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:02,705 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash 480818054, now seen corresponding path program 3 times
[2021-06-01 19:33:02,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:02,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946492841]
[2021-06-01 19:33:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-06-01 19:33:02,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:02,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946492841]
[2021-06-01 19:33:02,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946492841] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:02,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047860822]
[2021-06-01 19:33:02,741 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
[2021-06-01 19:33:02,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:33:02,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:02,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-06-01 19:33:02,800 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-06-01 19:33:02,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047860822] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-01 19:33:02,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-06-01 19:33:02,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5
[2021-06-01 19:33:02,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939445224]
[2021-06-01 19:33:02,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-06-01 19:33:02,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:02,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-06-01 19:33:02,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-06-01 19:33:02,871 INFO L87 Difference]: Start difference. First operand 1654 states and 5500 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:02,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:02,922 INFO L93 Difference]: Finished difference Result 4845 states and 15851 transitions.
[2021-06-01 19:33:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-06-01 19:33:02,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41
[2021-06-01 19:33:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:02,948 INFO L225 Difference]: With dead ends: 4845
[2021-06-01 19:33:02,949 INFO L226 Difference]: Without dead ends: 4554
[2021-06-01 19:33:02,949 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-06-01 19:33:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states.
[2021-06-01 19:33:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3828.
[2021-06-01 19:33:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 3.367650901489417) internal successors, (12888), 3827 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 12888 transitions.
[2021-06-01 19:33:03,092 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 12888 transitions. Word has length 41
[2021-06-01 19:33:03,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:03,093 INFO L482 AbstractCegarLoop]: Abstraction has 3828 states and 12888 transitions.
[2021-06-01 19:33:03,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 12888 transitions.
[2021-06-01 19:33:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:03,106 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:03,106 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:03,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:03,321 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:03,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1559474053, now seen corresponding path program 4 times
[2021-06-01 19:33:03,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:03,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105433836]
[2021-06-01 19:33:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-01 19:33:03,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:03,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105433836]
[2021-06-01 19:33:03,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105433836] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:03,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532272803]
[2021-06-01 19:33:03,826 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
[2021-06-01 19:33:03,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:33:03,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:03,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:03,884 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:04,348 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:04,349 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 31 treesize of output 19
[2021-06-01 19:33:04,354 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:04,361 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:04,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:04,362 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:33:04,452 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:04,453 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 25 treesize of output 13
[2021-06-01 19:33:04,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:04,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:04,465 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:04,465 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:04,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532272803] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:04,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:04,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35
[2021-06-01 19:33:04,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955811127]
[2021-06-01 19:33:04,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-01 19:33:04,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:04,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-01 19:33:04,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190
[2021-06-01 19:33:04,559 INFO L87 Difference]: Start difference. First operand 3828 states and 12888 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:12,597 INFO L93 Difference]: Finished difference Result 26830 states and 89990 transitions.
[2021-06-01 19:33:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states.
[2021-06-01 19:33:12,605 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:12,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:12,726 INFO L225 Difference]: With dead ends: 26830
[2021-06-01 19:33:12,727 INFO L226 Difference]: Without dead ends: 23098
[2021-06-01 19:33:12,735 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17127 ImplicationChecksByTransitivity, 6322.8ms TimeCoverageRelationStatistics Valid=5021, Invalid=37209, Unknown=0, NotChecked=0, Total=42230
[2021-06-01 19:33:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23098 states.
[2021-06-01 19:33:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23098 to 4547.
[2021-06-01 19:33:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4546 states have (on average 3.3515178178618568) internal successors, (15236), 4546 states have internal predecessors, (15236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 15236 transitions.
[2021-06-01 19:33:13,224 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 15236 transitions. Word has length 44
[2021-06-01 19:33:13,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:13,225 INFO L482 AbstractCegarLoop]: Abstraction has 4547 states and 15236 transitions.
[2021-06-01 19:33:13,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 15236 transitions.
[2021-06-01 19:33:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:13,238 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:13,238 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:13,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:13,466 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:13,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1256079791, now seen corresponding path program 5 times
[2021-06-01 19:33:13,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:13,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554268721]
[2021-06-01 19:33:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:13,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:13,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554268721]
[2021-06-01 19:33:13,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554268721] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:13,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634591527]
[2021-06-01 19:33:13,895 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
[2021-06-01 19:33:13,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-01 19:33:13,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:13,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-06-01 19:33:13,943 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:14,330 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:14,330 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 31 treesize of output 19
[2021-06-01 19:33:14,335 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:14,340 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:14,344 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:14,344 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:22
[2021-06-01 19:33:14,483 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:14,483 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 25 treesize of output 13
[2021-06-01 19:33:14,485 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:14,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:14,489 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:14,489 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:14,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634591527] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:14,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:14,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726669488]
[2021-06-01 19:33:14,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:14,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:14,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:14,592 INFO L87 Difference]: Start difference. First operand 4547 states and 15236 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:18,518 INFO L93 Difference]: Finished difference Result 28401 states and 94904 transitions.
[2021-06-01 19:33:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states.
[2021-06-01 19:33:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:18,605 INFO L225 Difference]: With dead ends: 28401
[2021-06-01 19:33:18,606 INFO L226 Difference]: Without dead ends: 27869
[2021-06-01 19:33:18,609 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4710 ImplicationChecksByTransitivity, 2748.9ms TimeCoverageRelationStatistics Valid=2046, Invalid=11760, Unknown=0, NotChecked=0, Total=13806
[2021-06-01 19:33:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27869 states.
[2021-06-01 19:33:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27869 to 5370.
[2021-06-01 19:33:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 5369 states have (on average 3.3402868318122554) internal successors, (17934), 5369 states have internal predecessors, (17934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 17934 transitions.
[2021-06-01 19:33:18,972 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 17934 transitions. Word has length 44
[2021-06-01 19:33:18,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:18,973 INFO L482 AbstractCegarLoop]: Abstraction has 5370 states and 17934 transitions.
[2021-06-01 19:33:18,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 17934 transitions.
[2021-06-01 19:33:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:18,986 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:18,986 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:19,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-06-01 19:33:19,201 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash 748755985, now seen corresponding path program 6 times
[2021-06-01 19:33:19,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:19,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95976364]
[2021-06-01 19:33:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:19,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:19,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95976364]
[2021-06-01 19:33:19,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95976364] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:19,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562035862]
[2021-06-01 19:33:19,561 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
[2021-06-01 19:33:19,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-01 19:33:19,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:19,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:19,873 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:19,873 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 29 treesize of output 17
[2021-06-01 19:33:19,875 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:19,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:19,882 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:19,882 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:33:20,022 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:20,022 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 25 treesize of output 13
[2021-06-01 19:33:20,024 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:20,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:20,030 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:20,030 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:20,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562035862] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:20,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:20,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:20,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683801607]
[2021-06-01 19:33:20,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:20,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:20,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:20,113 INFO L87 Difference]: Start difference. First operand 5370 states and 17934 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:24,377 INFO L93 Difference]: Finished difference Result 37756 states and 126024 transitions.
[2021-06-01 19:33:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2021-06-01 19:33:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:24,494 INFO L225 Difference]: With dead ends: 37756
[2021-06-01 19:33:24,494 INFO L226 Difference]: Without dead ends: 36886
[2021-06-01 19:33:24,496 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5904 ImplicationChecksByTransitivity, 3237.5ms TimeCoverageRelationStatistics Valid=2522, Invalid=14248, Unknown=0, NotChecked=0, Total=16770
[2021-06-01 19:33:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36886 states.
[2021-06-01 19:33:24,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36886 to 5460.
[2021-06-01 19:33:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5460 states, 5459 states have (on average 3.3418208463088477) internal successors, (18243), 5459 states have internal predecessors, (18243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5460 states to 5460 states and 18243 transitions.
[2021-06-01 19:33:24,968 INFO L78 Accepts]: Start accepts. Automaton has 5460 states and 18243 transitions. Word has length 44
[2021-06-01 19:33:24,969 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:24,969 INFO L482 AbstractCegarLoop]: Abstraction has 5460 states and 18243 transitions.
[2021-06-01 19:33:24,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states and 18243 transitions.
[2021-06-01 19:33:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:24,983 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:24,983 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:25,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:25,206 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:25,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -169323025, now seen corresponding path program 7 times
[2021-06-01 19:33:25,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:25,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770617207]
[2021-06-01 19:33:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:25,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:25,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770617207]
[2021-06-01 19:33:25,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770617207] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:25,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140242355]
[2021-06-01 19:33:25,570 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
[2021-06-01 19:33:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:25,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:25,609 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:25,914 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:25,914 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 29 treesize of output 17
[2021-06-01 19:33:25,916 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:25,923 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:25,924 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:25,924 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:33:26,065 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:26,065 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 25 treesize of output 13
[2021-06-01 19:33:26,067 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:26,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:26,072 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:26,072 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:26,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140242355] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:26,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:26,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:26,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154109338]
[2021-06-01 19:33:26,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:26,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:26,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:26,144 INFO L87 Difference]: Start difference. First operand 5460 states and 18243 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:31,231 INFO L93 Difference]: Finished difference Result 47050 states and 156994 transitions.
[2021-06-01 19:33:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states.
[2021-06-01 19:33:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:31,363 INFO L225 Difference]: With dead ends: 47050
[2021-06-01 19:33:31,363 INFO L226 Difference]: Without dead ends: 45439
[2021-06-01 19:33:31,365 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7555 ImplicationChecksByTransitivity, 3982.2ms TimeCoverageRelationStatistics Valid=2979, Invalid=17327, Unknown=0, NotChecked=0, Total=20306
[2021-06-01 19:33:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45439 states.
[2021-06-01 19:33:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45439 to 6441.
[2021-06-01 19:33:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6440 states have (on average 3.332919254658385) internal successors, (21464), 6440 states have internal predecessors, (21464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 21464 transitions.
[2021-06-01 19:33:31,857 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 21464 transitions. Word has length 44
[2021-06-01 19:33:31,857 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:31,857 INFO L482 AbstractCegarLoop]: Abstraction has 6441 states and 21464 transitions.
[2021-06-01 19:33:31,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 21464 transitions.
[2021-06-01 19:33:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:31,872 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:31,873 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:32,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:32,098 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 137214661, now seen corresponding path program 8 times
[2021-06-01 19:33:32,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:32,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578672698]
[2021-06-01 19:33:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:32,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:32,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578672698]
[2021-06-01 19:33:32,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578672698] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:32,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925783525]
[2021-06-01 19:33:32,396 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:32,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:33:32,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:32,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:32,431 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:32,809 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:32,809 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 31 treesize of output 19
[2021-06-01 19:33:32,811 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:32,817 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:32,818 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:32,818 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:27
[2021-06-01 19:33:32,910 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:32,911 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 25 treesize of output 13
[2021-06-01 19:33:32,912 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:32,917 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:32,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:32,918 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:32,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925783525] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:32,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:32,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:32,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800465329]
[2021-06-01 19:33:32,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:32,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:32,988 INFO L87 Difference]: Start difference. First operand 6441 states and 21464 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:36,825 INFO L93 Difference]: Finished difference Result 40863 states and 136185 transitions.
[2021-06-01 19:33:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2021-06-01 19:33:36,825 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:36,922 INFO L225 Difference]: With dead ends: 40863
[2021-06-01 19:33:36,922 INFO L226 Difference]: Without dead ends: 40043
[2021-06-01 19:33:36,924 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5762 ImplicationChecksByTransitivity, 2976.1ms TimeCoverageRelationStatistics Valid=2398, Invalid=14114, Unknown=0, NotChecked=0, Total=16512
[2021-06-01 19:33:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40043 states.
[2021-06-01 19:33:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40043 to 6540.
[2021-06-01 19:33:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6540 states, 6539 states have (on average 3.3339960238568587) internal successors, (21801), 6539 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 21801 transitions.
[2021-06-01 19:33:37,352 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 21801 transitions. Word has length 44
[2021-06-01 19:33:37,353 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:37,353 INFO L482 AbstractCegarLoop]: Abstraction has 6540 states and 21801 transitions.
[2021-06-01 19:33:37,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 21801 transitions.
[2021-06-01 19:33:37,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:37,368 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:37,368 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:37,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2021-06-01 19:33:37,581 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash -780864349, now seen corresponding path program 9 times
[2021-06-01 19:33:37,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:37,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250305375]
[2021-06-01 19:33:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:37,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:37,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250305375]
[2021-06-01 19:33:37,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250305375] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:37,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324321684]
[2021-06-01 19:33:37,913 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:37,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:33:37,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:37,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:37,950 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:38,226 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:38,226 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 31 treesize of output 19
[2021-06-01 19:33:38,228 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:38,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:38,237 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:38,237 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:32
[2021-06-01 19:33:38,388 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:33:38,389 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:33:38,389 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 25 treesize of output 13
[2021-06-01 19:33:38,394 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:38,401 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:38,402 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:38,402 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:10
[2021-06-01 19:33:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:38,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324321684] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:38,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:38,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:38,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97450839]
[2021-06-01 19:33:38,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:38,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:38,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:38,475 INFO L87 Difference]: Start difference. First operand 6540 states and 21801 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:43,437 INFO L93 Difference]: Finished difference Result 45280 states and 150579 transitions.
[2021-06-01 19:33:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states.
[2021-06-01 19:33:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:43,525 INFO L225 Difference]: With dead ends: 45280
[2021-06-01 19:33:43,525 INFO L226 Difference]: Without dead ends: 44360
[2021-06-01 19:33:43,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7367 ImplicationChecksByTransitivity, 3940.1ms TimeCoverageRelationStatistics Valid=2906, Invalid=17116, Unknown=0, NotChecked=0, Total=20022
[2021-06-01 19:33:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44360 states.
[2021-06-01 19:33:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44360 to 6507.
[2021-06-01 19:33:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6507 states, 6506 states have (on average 3.334153089455887) internal successors, (21692), 6506 states have internal predecessors, (21692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 21692 transitions.
[2021-06-01 19:33:43,901 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 21692 transitions. Word has length 44
[2021-06-01 19:33:43,901 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:43,901 INFO L482 AbstractCegarLoop]: Abstraction has 6507 states and 21692 transitions.
[2021-06-01 19:33:43,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 21692 transitions.
[2021-06-01 19:33:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:43,915 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:43,916 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:44,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:44,129 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:44,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:44,129 INFO L82 PathProgramCache]: Analyzing trace with hash -114430541, now seen corresponding path program 10 times
[2021-06-01 19:33:44,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:44,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917951967]
[2021-06-01 19:33:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:44,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:44,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917951967]
[2021-06-01 19:33:44,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917951967] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:44,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190984826]
[2021-06-01 19:33:44,456 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:44,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:33:44,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:44,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:44,503 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:44,840 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:44,840 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 31 treesize of output 19
[2021-06-01 19:33:44,842 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:44,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:44,848 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:44,848 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:33:44,915 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:44,915 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 25 treesize of output 13
[2021-06-01 19:33:44,916 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:44,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:44,920 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:44,920 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:44,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190984826] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:44,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:44,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:44,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649062551]
[2021-06-01 19:33:44,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:44,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:44,983 INFO L87 Difference]: Start difference. First operand 6507 states and 21692 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:50,387 INFO L93 Difference]: Finished difference Result 40459 states and 134704 transitions.
[2021-06-01 19:33:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2021-06-01 19:33:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:50,467 INFO L225 Difference]: With dead ends: 40459
[2021-06-01 19:33:50,467 INFO L226 Difference]: Without dead ends: 39249
[2021-06-01 19:33:50,469 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10083 ImplicationChecksByTransitivity, 4350.9ms TimeCoverageRelationStatistics Valid=3639, Invalid=22767, Unknown=0, NotChecked=0, Total=26406
[2021-06-01 19:33:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39249 states.
[2021-06-01 19:33:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39249 to 6786.
[2021-06-01 19:33:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6786 states, 6785 states have (on average 3.3326455416359617) internal successors, (22612), 6785 states have internal predecessors, (22612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6786 states to 6786 states and 22612 transitions.
[2021-06-01 19:33:50,786 INFO L78 Accepts]: Start accepts. Automaton has 6786 states and 22612 transitions. Word has length 44
[2021-06-01 19:33:50,786 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:50,786 INFO L482 AbstractCegarLoop]: Abstraction has 6786 states and 22612 transitions.
[2021-06-01 19:33:50,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6786 states and 22612 transitions.
[2021-06-01 19:33:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:50,801 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:50,801 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:51,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2021-06-01 19:33:51,004 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash -686560397, now seen corresponding path program 11 times
[2021-06-01 19:33:51,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:51,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993986126]
[2021-06-01 19:33:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:51,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:51,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993986126]
[2021-06-01 19:33:51,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993986126] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:51,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868863443]
[2021-06-01 19:33:51,262 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:51,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-01 19:33:51,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:51,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-06-01 19:33:51,296 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:51,649 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:33:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:33:51,651 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:33:51,651 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:33:51,652 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-06-01 19:33:51,653 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:51,663 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:51,664 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:51,664 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:22
[2021-06-01 19:33:51,787 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:51,787 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 25 treesize of output 13
[2021-06-01 19:33:51,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:51,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:51,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:51,792 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:33:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:51,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868863443] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:51,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:51,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:51,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000632761]
[2021-06-01 19:33:51,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:51,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:51,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:51,878 INFO L87 Difference]: Start difference. First operand 6786 states and 22612 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:55,321 INFO L93 Difference]: Finished difference Result 22347 states and 74432 transitions.
[2021-06-01 19:33:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2021-06-01 19:33:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:55,364 INFO L225 Difference]: With dead ends: 22347
[2021-06-01 19:33:55,365 INFO L226 Difference]: Without dead ends: 22075
[2021-06-01 19:33:55,365 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 2320.3ms TimeCoverageRelationStatistics Valid=1403, Invalid=7339, Unknown=0, NotChecked=0, Total=8742
[2021-06-01 19:33:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22075 states.
[2021-06-01 19:33:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22075 to 6570.
[2021-06-01 19:33:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 6569 states have (on average 3.3344496879281476) internal successors, (21904), 6569 states have internal predecessors, (21904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 21904 transitions.
[2021-06-01 19:33:55,577 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 21904 transitions. Word has length 44
[2021-06-01 19:33:55,577 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:55,577 INFO L482 AbstractCegarLoop]: Abstraction has 6570 states and 21904 transitions.
[2021-06-01 19:33:55,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 21904 transitions.
[2021-06-01 19:33:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:55,591 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:55,591 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:55,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2021-06-01 19:33:55,806 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash 263509385, now seen corresponding path program 12 times
[2021-06-01 19:33:55,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:55,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907533014]
[2021-06-01 19:33:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:56,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:56,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907533014]
[2021-06-01 19:33:56,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907533014] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:56,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871082270]
[2021-06-01 19:33:56,062 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:56,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-01 19:33:56,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:33:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-06-01 19:33:56,096 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:56,339 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:56,340 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 29 treesize of output 17
[2021-06-01 19:33:56,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:56,348 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:56,348 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:56,349 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:33:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:33:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:33:56,531 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:33:56,531 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 25 treesize of output 13
[2021-06-01 19:33:56,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:56,539 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:56,541 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:56,541 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:10
[2021-06-01 19:33:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:56,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871082270] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:56,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:33:56,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:33:56,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593645651]
[2021-06-01 19:33:56,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:33:56,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:33:56,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:33:56,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:33:56,609 INFO L87 Difference]: Start difference. First operand 6570 states and 21904 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:33:59,021 INFO L93 Difference]: Finished difference Result 13093 states and 43669 transitions.
[2021-06-01 19:33:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-06-01 19:33:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:33:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:33:59,043 INFO L225 Difference]: With dead ends: 13093
[2021-06-01 19:33:59,043 INFO L226 Difference]: Without dead ends: 12613
[2021-06-01 19:33:59,044 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1821.0ms TimeCoverageRelationStatistics Valid=1057, Invalid=6083, Unknown=0, NotChecked=0, Total=7140
[2021-06-01 19:33:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12613 states.
[2021-06-01 19:33:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12613 to 6722.
[2021-06-01 19:33:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6722 states, 6721 states have (on average 3.3309031394137776) internal successors, (22387), 6721 states have internal predecessors, (22387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6722 states to 6722 states and 22387 transitions.
[2021-06-01 19:33:59,172 INFO L78 Accepts]: Start accepts. Automaton has 6722 states and 22387 transitions. Word has length 44
[2021-06-01 19:33:59,172 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:33:59,172 INFO L482 AbstractCegarLoop]: Abstraction has 6722 states and 22387 transitions.
[2021-06-01 19:33:59,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:33:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6722 states and 22387 transitions.
[2021-06-01 19:33:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:33:59,184 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:33:59,184 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:33:59,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:59,389 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:33:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:33:59,389 INFO L82 PathProgramCache]: Analyzing trace with hash -243814421, now seen corresponding path program 13 times
[2021-06-01 19:33:59,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:33:59,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448980736]
[2021-06-01 19:33:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:33:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:33:59,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:33:59,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448980736]
[2021-06-01 19:33:59,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448980736] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:33:59,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741457827]
[2021-06-01 19:33:59,627 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:33:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:33:59,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:33:59,659 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:33:59,923 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:33:59,924 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 29 treesize of output 17
[2021-06-01 19:33:59,925 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:59,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:33:59,931 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:33:59,931 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:34:00,074 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:00,074 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 25 treesize of output 13
[2021-06-01 19:34:00,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:00,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:00,079 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:00,079 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:00,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741457827] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:00,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:00,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:00,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238517918]
[2021-06-01 19:34:00,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:00,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:00,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:00,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:00,154 INFO L87 Difference]: Start difference. First operand 6722 states and 22387 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:01,794 INFO L93 Difference]: Finished difference Result 12931 states and 43239 transitions.
[2021-06-01 19:34:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-06-01 19:34:01,794 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:01,817 INFO L225 Difference]: With dead ends: 12931
[2021-06-01 19:34:01,817 INFO L226 Difference]: Without dead ends: 12631
[2021-06-01 19:34:01,817 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1273.2ms TimeCoverageRelationStatistics Valid=662, Invalid=3894, Unknown=0, NotChecked=0, Total=4556
[2021-06-01 19:34:01,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12631 states.
[2021-06-01 19:34:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12631 to 6793.
[2021-06-01 19:34:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6793 states, 6792 states have (on average 3.3318610129564195) internal successors, (22630), 6792 states have internal predecessors, (22630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 22630 transitions.
[2021-06-01 19:34:01,978 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 22630 transitions. Word has length 44
[2021-06-01 19:34:01,978 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:01,978 INFO L482 AbstractCegarLoop]: Abstraction has 6793 states and 22630 transitions.
[2021-06-01 19:34:01,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 22630 transitions.
[2021-06-01 19:34:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:01,987 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:01,987 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:02,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2021-06-01 19:34:02,191 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:02,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1161893431, now seen corresponding path program 14 times
[2021-06-01 19:34:02,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:02,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285596739]
[2021-06-01 19:34:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:02,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:02,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285596739]
[2021-06-01 19:34:02,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285596739] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:02,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988332014]
[2021-06-01 19:34:02,496 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:02,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:34:02,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:02,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:02,535 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:02,812 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:02,812 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 29 treesize of output 17
[2021-06-01 19:34:02,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:02,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:02,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:02,823 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:34:02,955 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:02,955 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 25 treesize of output 13
[2021-06-01 19:34:02,956 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:02,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:02,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:02,960 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:03,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988332014] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:03,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:03,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:03,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859356745]
[2021-06-01 19:34:03,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:03,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:03,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:03,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:03,035 INFO L87 Difference]: Start difference. First operand 6793 states and 22630 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:06,972 INFO L93 Difference]: Finished difference Result 31575 states and 105236 transitions.
[2021-06-01 19:34:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2021-06-01 19:34:06,972 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:07,030 INFO L225 Difference]: With dead ends: 31575
[2021-06-01 19:34:07,030 INFO L226 Difference]: Without dead ends: 31013
[2021-06-01 19:34:07,031 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3604 ImplicationChecksByTransitivity, 2934.5ms TimeCoverageRelationStatistics Valid=1883, Invalid=9889, Unknown=0, NotChecked=0, Total=11772
[2021-06-01 19:34:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31013 states.
[2021-06-01 19:34:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31013 to 6874.
[2021-06-01 19:34:07,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6874 states, 6873 states have (on average 3.3262039866142876) internal successors, (22861), 6873 states have internal predecessors, (22861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6874 states to 6874 states and 22861 transitions.
[2021-06-01 19:34:07,255 INFO L78 Accepts]: Start accepts. Automaton has 6874 states and 22861 transitions. Word has length 44
[2021-06-01 19:34:07,255 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:07,255 INFO L482 AbstractCegarLoop]: Abstraction has 6874 states and 22861 transitions.
[2021-06-01 19:34:07,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6874 states and 22861 transitions.
[2021-06-01 19:34:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:07,264 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:07,264 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:07,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:07,464 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:07,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1107000947, now seen corresponding path program 15 times
[2021-06-01 19:34:07,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:07,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761764100]
[2021-06-01 19:34:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:07,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:07,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761764100]
[2021-06-01 19:34:07,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761764100] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:07,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240156618]
[2021-06-01 19:34:07,732 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:07,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:34:07,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:07,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-06-01 19:34:07,777 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:08,150 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:34:08,151 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:34:08,151 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
[2021-06-01 19:34:08,153 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:08,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:08,164 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:08,164 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:24
[2021-06-01 19:34:08,246 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:08,247 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 25 treesize of output 13
[2021-06-01 19:34:08,249 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:08,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:08,253 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:08,253 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:08,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240156618] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:08,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:08,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:08,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052736448]
[2021-06-01 19:34:08,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:08,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:08,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:08,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:08,336 INFO L87 Difference]: Start difference. First operand 6874 states and 22861 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:13,820 INFO L93 Difference]: Finished difference Result 35083 states and 116558 transitions.
[2021-06-01 19:34:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states.
[2021-06-01 19:34:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:13,882 INFO L225 Difference]: With dead ends: 35083
[2021-06-01 19:34:13,883 INFO L226 Difference]: Without dead ends: 34089
[2021-06-01 19:34:13,883 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5891 ImplicationChecksByTransitivity, 4216.8ms TimeCoverageRelationStatistics Valid=2817, Invalid=14739, Unknown=0, NotChecked=0, Total=17556
[2021-06-01 19:34:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34089 states.
[2021-06-01 19:34:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34089 to 7792.
[2021-06-01 19:34:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7792 states, 7791 states have (on average 3.3162623539982032) internal successors, (25837), 7791 states have internal predecessors, (25837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7792 states to 7792 states and 25837 transitions.
[2021-06-01 19:34:14,141 INFO L78 Accepts]: Start accepts. Automaton has 7792 states and 25837 transitions. Word has length 44
[2021-06-01 19:34:14,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:14,141 INFO L482 AbstractCegarLoop]: Abstraction has 7792 states and 25837 transitions.
[2021-06-01 19:34:14,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:14,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7792 states and 25837 transitions.
[2021-06-01 19:34:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:14,151 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:14,151 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:14,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42
[2021-06-01 19:34:14,361 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:14,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1435545757, now seen corresponding path program 16 times
[2021-06-01 19:34:14,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:14,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504670647]
[2021-06-01 19:34:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:14,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:14,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504670647]
[2021-06-01 19:34:14,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504670647] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:14,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184201489]
[2021-06-01 19:34:14,725 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:14,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:34:14,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:14,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:14,774 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:15,103 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:15,103 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 31 treesize of output 19
[2021-06-01 19:34:15,104 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:15,110 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:15,110 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:15,111 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:34:15,176 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:15,176 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 25 treesize of output 13
[2021-06-01 19:34:15,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:15,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:15,181 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:15,181 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:15,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184201489] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:15,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:15,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:15,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218635053]
[2021-06-01 19:34:15,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:15,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:15,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:15,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:15,244 INFO L87 Difference]: Start difference. First operand 7792 states and 25837 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:21,239 INFO L93 Difference]: Finished difference Result 41800 states and 139248 transitions.
[2021-06-01 19:34:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states.
[2021-06-01 19:34:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:21,313 INFO L225 Difference]: With dead ends: 41800
[2021-06-01 19:34:21,313 INFO L226 Difference]: Without dead ends: 37404
[2021-06-01 19:34:21,315 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12795 ImplicationChecksByTransitivity, 4624.3ms TimeCoverageRelationStatistics Valid=4443, Invalid=28137, Unknown=0, NotChecked=0, Total=32580
[2021-06-01 19:34:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37404 states.
[2021-06-01 19:34:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37404 to 8391.
[2021-06-01 19:34:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8391 states, 8390 states have (on average 3.3079856972586414) internal successors, (27754), 8390 states have internal predecessors, (27754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8391 states to 8391 states and 27754 transitions.
[2021-06-01 19:34:21,632 INFO L78 Accepts]: Start accepts. Automaton has 8391 states and 27754 transitions. Word has length 44
[2021-06-01 19:34:21,633 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:21,633 INFO L482 AbstractCegarLoop]: Abstraction has 8391 states and 27754 transitions.
[2021-06-01 19:34:21,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8391 states and 27754 transitions.
[2021-06-01 19:34:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:21,644 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:21,644 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:21,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:21,849 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash -789276919, now seen corresponding path program 17 times
[2021-06-01 19:34:21,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:21,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684523805]
[2021-06-01 19:34:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:22,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:22,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684523805]
[2021-06-01 19:34:22,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684523805] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:22,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182978354]
[2021-06-01 19:34:22,220 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:22,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-01 19:34:22,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:22,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 36 conjunts are in the unsatisfiable core
[2021-06-01 19:34:22,260 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:22,538 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:22,538 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 31 treesize of output 19
[2021-06-01 19:34:22,539 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:22,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:22,545 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:22,545 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:22
[2021-06-01 19:34:22,690 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:22,691 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 25 treesize of output 13
[2021-06-01 19:34:22,692 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:22,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:22,695 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:22,695 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:22,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182978354] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:22,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:22,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:22,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446338729]
[2021-06-01 19:34:22,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:22,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:22,766 INFO L87 Difference]: Start difference. First operand 8391 states and 27754 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:26,306 INFO L93 Difference]: Finished difference Result 33537 states and 111619 transitions.
[2021-06-01 19:34:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states.
[2021-06-01 19:34:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:26,370 INFO L225 Difference]: With dead ends: 33537
[2021-06-01 19:34:26,370 INFO L226 Difference]: Without dead ends: 33005
[2021-06-01 19:34:26,371 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5148 ImplicationChecksByTransitivity, 2678.5ms TimeCoverageRelationStatistics Valid=2279, Invalid=12483, Unknown=0, NotChecked=0, Total=14762
[2021-06-01 19:34:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33005 states.
[2021-06-01 19:34:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33005 to 8815.
[2021-06-01 19:34:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8814 states have (on average 3.3045155434535967) internal successors, (29126), 8814 states have internal predecessors, (29126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 29126 transitions.
[2021-06-01 19:34:26,662 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 29126 transitions. Word has length 44
[2021-06-01 19:34:26,662 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:26,662 INFO L482 AbstractCegarLoop]: Abstraction has 8815 states and 29126 transitions.
[2021-06-01 19:34:26,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 29126 transitions.
[2021-06-01 19:34:26,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:26,673 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:26,673 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:26,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2021-06-01 19:34:26,875 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:26,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1296600725, now seen corresponding path program 18 times
[2021-06-01 19:34:26,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:26,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736524385]
[2021-06-01 19:34:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:27,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:27,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736524385]
[2021-06-01 19:34:27,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736524385] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:27,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500183554]
[2021-06-01 19:34:27,282 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:27,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-01 19:34:27,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:27,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:27,317 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:27,581 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:27,582 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 29 treesize of output 17
[2021-06-01 19:34:27,583 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:27,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:27,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:27,589 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:34:27,706 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:27,706 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 25 treesize of output 13
[2021-06-01 19:34:27,707 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:27,710 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:27,711 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:27,711 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:27,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500183554] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:27,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:27,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:27,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578256352]
[2021-06-01 19:34:27,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:27,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:27,782 INFO L87 Difference]: Start difference. First operand 8815 states and 29126 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:31,998 INFO L93 Difference]: Finished difference Result 42883 states and 142841 transitions.
[2021-06-01 19:34:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states.
[2021-06-01 19:34:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:32,079 INFO L225 Difference]: With dead ends: 42883
[2021-06-01 19:34:32,079 INFO L226 Difference]: Without dead ends: 41993
[2021-06-01 19:34:32,080 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6774 ImplicationChecksByTransitivity, 3393.0ms TimeCoverageRelationStatistics Valid=2912, Invalid=15994, Unknown=0, NotChecked=0, Total=18906
[2021-06-01 19:34:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41993 states.
[2021-06-01 19:34:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41993 to 8932.
[2021-06-01 19:34:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8932 states, 8931 states have (on average 3.3055648863509126) internal successors, (29522), 8931 states have internal predecessors, (29522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8932 states to 8932 states and 29522 transitions.
[2021-06-01 19:34:32,446 INFO L78 Accepts]: Start accepts. Automaton has 8932 states and 29522 transitions. Word has length 44
[2021-06-01 19:34:32,446 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:32,446 INFO L482 AbstractCegarLoop]: Abstraction has 8932 states and 29522 transitions.
[2021-06-01 19:34:32,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8932 states and 29522 transitions.
[2021-06-01 19:34:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:32,462 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:32,462 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:32,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51
[2021-06-01 19:34:32,669 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:32,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:32,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2080287561, now seen corresponding path program 19 times
[2021-06-01 19:34:32,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:32,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736641070]
[2021-06-01 19:34:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:32,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:32,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736641070]
[2021-06-01 19:34:32,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736641070] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:32,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550788607]
[2021-06-01 19:34:32,972 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:33,004 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:33,255 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:33,255 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 29 treesize of output 17
[2021-06-01 19:34:33,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:33,262 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:33,262 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:33,262 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:34:33,376 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:33,377 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 25 treesize of output 13
[2021-06-01 19:34:33,378 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:33,381 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:33,381 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:33,381 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:33,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550788607] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:33,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:33,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:33,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62152214]
[2021-06-01 19:34:33,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:33,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:33,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:33,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:33,449 INFO L87 Difference]: Start difference. First operand 8932 states and 29522 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:38,872 INFO L93 Difference]: Finished difference Result 48973 states and 162757 transitions.
[2021-06-01 19:34:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2021-06-01 19:34:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:38,968 INFO L225 Difference]: With dead ends: 48973
[2021-06-01 19:34:38,969 INFO L226 Difference]: Without dead ends: 47923
[2021-06-01 19:34:38,970 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8907 ImplicationChecksByTransitivity, 4159.6ms TimeCoverageRelationStatistics Valid=3456, Invalid=20414, Unknown=0, NotChecked=0, Total=23870
[2021-06-01 19:34:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47923 states.
[2021-06-01 19:34:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47923 to 9050.
[2021-06-01 19:34:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9050 states, 9049 states have (on average 3.305448115813902) internal successors, (29911), 9049 states have internal predecessors, (29911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9050 states to 9050 states and 29911 transitions.
[2021-06-01 19:34:39,351 INFO L78 Accepts]: Start accepts. Automaton has 9050 states and 29911 transitions. Word has length 44
[2021-06-01 19:34:39,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:39,352 INFO L482 AbstractCegarLoop]: Abstraction has 9050 states and 29911 transitions.
[2021-06-01 19:34:39,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 9050 states and 29911 transitions.
[2021-06-01 19:34:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:39,366 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:39,367 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:39,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:39,590 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:39,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1908142049, now seen corresponding path program 20 times
[2021-06-01 19:34:39,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:39,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507025866]
[2021-06-01 19:34:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:39,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:39,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507025866]
[2021-06-01 19:34:39,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507025866] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:39,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511628713]
[2021-06-01 19:34:39,892 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:39,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:34:39,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:39,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:39,925 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:40,254 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:40,254 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 31 treesize of output 19
[2021-06-01 19:34:40,255 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:40,262 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:40,262 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:40,263 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:27
[2021-06-01 19:34:40,378 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:40,378 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 25 treesize of output 13
[2021-06-01 19:34:40,379 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:40,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:40,384 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:40,384 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:40,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511628713] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:40,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:40,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:40,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324254307]
[2021-06-01 19:34:40,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:40,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:40,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:40,446 INFO L87 Difference]: Start difference. First operand 9050 states and 29911 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:44,818 INFO L93 Difference]: Finished difference Result 45204 states and 150223 transitions.
[2021-06-01 19:34:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2021-06-01 19:34:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:44,900 INFO L225 Difference]: With dead ends: 45204
[2021-06-01 19:34:44,900 INFO L226 Difference]: Without dead ends: 44384
[2021-06-01 19:34:44,901 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6509 ImplicationChecksByTransitivity, 3275.3ms TimeCoverageRelationStatistics Valid=2750, Invalid=15610, Unknown=0, NotChecked=0, Total=18360
[2021-06-01 19:34:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44384 states.
[2021-06-01 19:34:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44384 to 9149.
[2021-06-01 19:34:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9149 states, 9148 states have (on average 3.3065150852645386) internal successors, (30248), 9148 states have internal predecessors, (30248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9149 states to 9149 states and 30248 transitions.
[2021-06-01 19:34:45,237 INFO L78 Accepts]: Start accepts. Automaton has 9149 states and 30248 transitions. Word has length 44
[2021-06-01 19:34:45,237 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:45,237 INFO L482 AbstractCegarLoop]: Abstraction has 9149 states and 30248 transitions.
[2021-06-01 19:34:45,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 9149 states and 30248 transitions.
[2021-06-01 19:34:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:45,251 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:45,251 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:45,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57
[2021-06-01 19:34:45,451 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1468746237, now seen corresponding path program 21 times
[2021-06-01 19:34:45,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:45,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547564262]
[2021-06-01 19:34:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:45,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:45,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547564262]
[2021-06-01 19:34:45,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547564262] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:45,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026305157]
[2021-06-01 19:34:45,739 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:45,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:34:45,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:45,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:45,774 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:46,050 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:46,051 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 31 treesize of output 19
[2021-06-01 19:34:46,052 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:46,060 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:46,060 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:46,060 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:32
[2021-06-01 19:34:46,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:34:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:34:46,175 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:34:46,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-06-01 19:34:46,176 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:46,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:46,182 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:46,182 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:10
[2021-06-01 19:34:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:46,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026305157] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:46,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:46,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:46,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007359147]
[2021-06-01 19:34:46,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:46,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:46,247 INFO L87 Difference]: Start difference. First operand 9149 states and 30248 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:51,682 INFO L93 Difference]: Finished difference Result 49923 states and 165734 transitions.
[2021-06-01 19:34:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states.
[2021-06-01 19:34:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:51,775 INFO L225 Difference]: With dead ends: 49923
[2021-06-01 19:34:51,775 INFO L226 Difference]: Without dead ends: 49003
[2021-06-01 19:34:51,776 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 4172.0ms TimeCoverageRelationStatistics Valid=3371, Invalid=20191, Unknown=0, NotChecked=0, Total=23562
[2021-06-01 19:34:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49003 states.
[2021-06-01 19:34:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49003 to 9032.
[2021-06-01 19:34:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9032 states, 9031 states have (on average 3.3043959694386005) internal successors, (29842), 9031 states have internal predecessors, (29842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9032 states to 9032 states and 29842 transitions.
[2021-06-01 19:34:52,129 INFO L78 Accepts]: Start accepts. Automaton has 9032 states and 29842 transitions. Word has length 44
[2021-06-01 19:34:52,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:52,130 INFO L482 AbstractCegarLoop]: Abstraction has 9032 states and 29842 transitions.
[2021-06-01 19:34:52,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 9032 states and 29842 transitions.
[2021-06-01 19:34:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:52,141 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:52,141 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:52,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:52,342 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2135180045, now seen corresponding path program 22 times
[2021-06-01 19:34:52,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:52,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271909404]
[2021-06-01 19:34:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:34:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:52,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:34:52,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271909404]
[2021-06-01 19:34:52,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271909404] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:52,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147365228]
[2021-06-01 19:34:52,665 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:52,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:34:52,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:34:52,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:34:52,695 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:34:53,015 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:53,015 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 31 treesize of output 19
[2021-06-01 19:34:53,016 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:53,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:53,022 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:53,022 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:34:53,084 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:34:53,084 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 25 treesize of output 13
[2021-06-01 19:34:53,085 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:53,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:34:53,089 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:34:53,089 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:34:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:34:53,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147365228] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:34:53,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:34:53,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:34:53,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959176247]
[2021-06-01 19:34:53,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:34:53,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:34:53,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:34:53,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:34:53,150 INFO L87 Difference]: Start difference. First operand 9032 states and 29842 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:34:59,275 INFO L93 Difference]: Finished difference Result 45046 states and 149636 transitions.
[2021-06-01 19:34:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states.
[2021-06-01 19:34:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:34:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:34:59,361 INFO L225 Difference]: With dead ends: 45046
[2021-06-01 19:34:59,362 INFO L226 Difference]: Without dead ends: 43836
[2021-06-01 19:34:59,363 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10989 ImplicationChecksByTransitivity, 4577.5ms TimeCoverageRelationStatistics Valid=3874, Invalid=24856, Unknown=0, NotChecked=0, Total=28730
[2021-06-01 19:34:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43836 states.
[2021-06-01 19:34:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43836 to 8973.
[2021-06-01 19:34:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8973 states, 8972 states have (on average 3.3012706197057513) internal successors, (29619), 8972 states have internal predecessors, (29619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8973 states to 8973 states and 29619 transitions.
[2021-06-01 19:34:59,730 INFO L78 Accepts]: Start accepts. Automaton has 8973 states and 29619 transitions. Word has length 44
[2021-06-01 19:34:59,730 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:34:59,730 INFO L482 AbstractCegarLoop]: Abstraction has 8973 states and 29619 transitions.
[2021-06-01 19:34:59,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:34:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8973 states and 29619 transitions.
[2021-06-01 19:34:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:34:59,744 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:34:59,745 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:34:59,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:34:59,950 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:34:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:34:59,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1563050189, now seen corresponding path program 23 times
[2021-06-01 19:34:59,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:34:59,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535847126]
[2021-06-01 19:34:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:34:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:00,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:00,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535847126]
[2021-06-01 19:35:00,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535847126] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:00,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288572508]
[2021-06-01 19:35:00,219 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:00,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-01 19:35:00,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:00,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-06-01 19:35:00,269 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:00,599 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:35:00,600 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:35:00,600 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:35:00,607 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:35:00,610 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 31 treesize of output 19
[2021-06-01 19:35:00,611 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:00,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:00,621 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:00,621 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:22
[2021-06-01 19:35:00,752 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:00,752 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 25 treesize of output 13
[2021-06-01 19:35:00,754 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:00,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:00,758 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:00,759 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:00,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288572508] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:00,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:00,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:00,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852821256]
[2021-06-01 19:35:00,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:00,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:00,840 INFO L87 Difference]: Start difference. First operand 8973 states and 29619 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:04,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:04,330 INFO L93 Difference]: Finished difference Result 23013 states and 76366 transitions.
[2021-06-01 19:35:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2021-06-01 19:35:04,331 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:04,370 INFO L225 Difference]: With dead ends: 23013
[2021-06-01 19:35:04,370 INFO L226 Difference]: Without dead ends: 22741
[2021-06-01 19:35:04,371 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 2246.1ms TimeCoverageRelationStatistics Valid=1189, Invalid=6121, Unknown=0, NotChecked=0, Total=7310
[2021-06-01 19:35:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22741 states.
[2021-06-01 19:35:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22741 to 8595.
[2021-06-01 19:35:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8595 states, 8594 states have (on average 3.3031184547358623) internal successors, (28387), 8594 states have internal predecessors, (28387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8595 states to 8595 states and 28387 transitions.
[2021-06-01 19:35:04,577 INFO L78 Accepts]: Start accepts. Automaton has 8595 states and 28387 transitions. Word has length 44
[2021-06-01 19:35:04,577 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:04,577 INFO L482 AbstractCegarLoop]: Abstraction has 8595 states and 28387 transitions.
[2021-06-01 19:35:04,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8595 states and 28387 transitions.
[2021-06-01 19:35:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:04,588 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:04,588 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:04,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2021-06-01 19:35:04,793 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1134360447, now seen corresponding path program 24 times
[2021-06-01 19:35:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:04,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886553808]
[2021-06-01 19:35:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-01 19:35:05,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:05,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886553808]
[2021-06-01 19:35:05,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886553808] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:05,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670469989]
[2021-06-01 19:35:05,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:05,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-06-01 19:35:05,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:05,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:05,239 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:05,681 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:05,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-06-01 19:35:05,684 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:05,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:05,690 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:05,690 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:35:05,755 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:05,755 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 25 treesize of output 13
[2021-06-01 19:35:05,757 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:05,760 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:05,760 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:05,760 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:05,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670469989] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:05,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:05,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35
[2021-06-01 19:35:05,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433716229]
[2021-06-01 19:35:05,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-01 19:35:05,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:05,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-01 19:35:05,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190
[2021-06-01 19:35:05,822 INFO L87 Difference]: Start difference. First operand 8595 states and 28387 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:12,218 INFO L93 Difference]: Finished difference Result 35903 states and 119478 transitions.
[2021-06-01 19:35:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states.
[2021-06-01 19:35:12,218 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:12,285 INFO L225 Difference]: With dead ends: 35903
[2021-06-01 19:35:12,285 INFO L226 Difference]: Without dead ends: 31668
[2021-06-01 19:35:12,288 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12211 ImplicationChecksByTransitivity, 4983.6ms TimeCoverageRelationStatistics Valid=3970, Invalid=27182, Unknown=0, NotChecked=0, Total=31152
[2021-06-01 19:35:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31668 states.
[2021-06-01 19:35:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31668 to 9033.
[2021-06-01 19:35:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9033 states, 9032 states have (on average 3.2980513728963685) internal successors, (29788), 9032 states have internal predecessors, (29788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9033 states to 9033 states and 29788 transitions.
[2021-06-01 19:35:12,695 INFO L78 Accepts]: Start accepts. Automaton has 9033 states and 29788 transitions. Word has length 44
[2021-06-01 19:35:12,695 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:12,695 INFO L482 AbstractCegarLoop]: Abstraction has 9033 states and 29788 transitions.
[2021-06-01 19:35:12,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 9033 states and 29788 transitions.
[2021-06-01 19:35:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:12,707 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:12,707 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:12,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:12,909 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:12,910 INFO L82 PathProgramCache]: Analyzing trace with hash -345053005, now seen corresponding path program 25 times
[2021-06-01 19:35:12,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:12,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586549611]
[2021-06-01 19:35:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:13,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:13,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586549611]
[2021-06-01 19:35:13,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586549611] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:13,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079143951]
[2021-06-01 19:35:13,300 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:13,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:13,349 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:13,691 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:13,691 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 31 treesize of output 19
[2021-06-01 19:35:13,693 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:13,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:13,700 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:13,701 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:22
[2021-06-01 19:35:13,828 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:13,828 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 25 treesize of output 13
[2021-06-01 19:35:13,829 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:13,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:13,833 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:13,833 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:13,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079143951] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:13,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:13,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:13,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795301104]
[2021-06-01 19:35:13,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:13,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:13,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:13,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:13,905 INFO L87 Difference]: Start difference. First operand 9033 states and 29788 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:17,939 INFO L93 Difference]: Finished difference Result 36007 states and 119800 transitions.
[2021-06-01 19:35:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states.
[2021-06-01 19:35:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:18,008 INFO L225 Difference]: With dead ends: 36007
[2021-06-01 19:35:18,008 INFO L226 Difference]: Without dead ends: 35475
[2021-06-01 19:35:18,009 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4445 ImplicationChecksByTransitivity, 3040.0ms TimeCoverageRelationStatistics Valid=2074, Invalid=11968, Unknown=0, NotChecked=0, Total=14042
[2021-06-01 19:35:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35475 states.
[2021-06-01 19:35:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35475 to 9234.
[2021-06-01 19:35:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9234 states, 9233 states have (on average 3.30336835264811) internal successors, (30500), 9233 states have internal predecessors, (30500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9234 states to 9234 states and 30500 transitions.
[2021-06-01 19:35:18,335 INFO L78 Accepts]: Start accepts. Automaton has 9234 states and 30500 transitions. Word has length 44
[2021-06-01 19:35:18,335 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:18,335 INFO L482 AbstractCegarLoop]: Abstraction has 9234 states and 30500 transitions.
[2021-06-01 19:35:18,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 9234 states and 30500 transitions.
[2021-06-01 19:35:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:18,347 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:18,348 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:18,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72
[2021-06-01 19:35:18,548 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:18,549 INFO L82 PathProgramCache]: Analyzing trace with hash -852376811, now seen corresponding path program 26 times
[2021-06-01 19:35:18,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:18,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770135832]
[2021-06-01 19:35:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:18,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:18,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770135832]
[2021-06-01 19:35:18,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770135832] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:18,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463089465]
[2021-06-01 19:35:18,862 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:18,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:35:18,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:18,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:18,895 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:19,165 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:19,165 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 31 treesize of output 19
[2021-06-01 19:35:19,166 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:19,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:19,172 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:19,172 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:22
[2021-06-01 19:35:19,290 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:19,291 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 25 treesize of output 13
[2021-06-01 19:35:19,292 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:19,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:19,295 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:19,295 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:19,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463089465] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:19,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:19,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:19,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081353599]
[2021-06-01 19:35:19,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:19,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:19,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:19,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:19,373 INFO L87 Difference]: Start difference. First operand 9234 states and 30500 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:23,490 INFO L93 Difference]: Finished difference Result 34504 states and 114768 transitions.
[2021-06-01 19:35:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2021-06-01 19:35:23,490 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:23,556 INFO L225 Difference]: With dead ends: 34504
[2021-06-01 19:35:23,557 INFO L226 Difference]: Without dead ends: 34104
[2021-06-01 19:35:23,558 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4257 ImplicationChecksByTransitivity, 3153.1ms TimeCoverageRelationStatistics Valid=2087, Invalid=11253, Unknown=0, NotChecked=0, Total=13340
[2021-06-01 19:35:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34104 states.
[2021-06-01 19:35:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34104 to 9294.
[2021-06-01 19:35:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9294 states, 9293 states have (on average 3.3035618207252773) internal successors, (30700), 9293 states have internal predecessors, (30700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 30700 transitions.
[2021-06-01 19:35:23,930 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 30700 transitions. Word has length 44
[2021-06-01 19:35:23,930 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:23,930 INFO L482 AbstractCegarLoop]: Abstraction has 9294 states and 30700 transitions.
[2021-06-01 19:35:23,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 30700 transitions.
[2021-06-01 19:35:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:23,943 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:23,943 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:24,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:24,144 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:24,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1770455821, now seen corresponding path program 27 times
[2021-06-01 19:35:24,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:24,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325929878]
[2021-06-01 19:35:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:24,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:24,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325929878]
[2021-06-01 19:35:24,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325929878] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:24,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852335571]
[2021-06-01 19:35:24,526 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:24,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:35:24,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:24,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:24,562 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:24,815 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:24,815 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 31 treesize of output 19
[2021-06-01 19:35:24,817 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:24,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:24,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:24,823 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:22
[2021-06-01 19:35:24,940 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:24,941 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 25 treesize of output 13
[2021-06-01 19:35:24,941 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:24,945 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:24,946 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:24,946 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:25,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852335571] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:25,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:25,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:25,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907729618]
[2021-06-01 19:35:25,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:25,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:25,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:25,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:25,011 INFO L87 Difference]: Start difference. First operand 9294 states and 30700 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:29,905 INFO L93 Difference]: Finished difference Result 36651 states and 121809 transitions.
[2021-06-01 19:35:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states.
[2021-06-01 19:35:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:29,977 INFO L225 Difference]: With dead ends: 36651
[2021-06-01 19:35:29,978 INFO L226 Difference]: Without dead ends: 36236
[2021-06-01 19:35:29,979 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5972 ImplicationChecksByTransitivity, 3792.5ms TimeCoverageRelationStatistics Valid=2681, Invalid=15141, Unknown=0, NotChecked=0, Total=17822
[2021-06-01 19:35:30,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36236 states.
[2021-06-01 19:35:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36236 to 9180.
[2021-06-01 19:35:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9180 states, 9179 states have (on average 3.302974180193921) internal successors, (30318), 9179 states have internal predecessors, (30318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9180 states to 9180 states and 30318 transitions.
[2021-06-01 19:35:30,425 INFO L78 Accepts]: Start accepts. Automaton has 9180 states and 30318 transitions. Word has length 44
[2021-06-01 19:35:30,425 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:30,425 INFO L482 AbstractCegarLoop]: Abstraction has 9180 states and 30318 transitions.
[2021-06-01 19:35:30,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 9180 states and 30318 transitions.
[2021-06-01 19:35:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:30,437 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:30,437 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:30,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2021-06-01 19:35:30,641 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:30,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:30,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1463918135, now seen corresponding path program 28 times
[2021-06-01 19:35:30,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:30,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410697569]
[2021-06-01 19:35:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:30,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:30,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410697569]
[2021-06-01 19:35:30,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410697569] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:30,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116557531]
[2021-06-01 19:35:30,974 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:31,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:35:31,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:31,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:31,006 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:31,284 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:31,285 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 31 treesize of output 19
[2021-06-01 19:35:31,285 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:31,296 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:31,297 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:31,297 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:27
[2021-06-01 19:35:31,390 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:31,390 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 25 treesize of output 13
[2021-06-01 19:35:31,391 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:31,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:31,395 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:31,395 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:31,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116557531] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:31,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:31,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:31,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239264354]
[2021-06-01 19:35:31,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:31,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:31,454 INFO L87 Difference]: Start difference. First operand 9180 states and 30318 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:35,472 INFO L93 Difference]: Finished difference Result 34096 states and 113371 transitions.
[2021-06-01 19:35:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2021-06-01 19:35:35,472 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:35,537 INFO L225 Difference]: With dead ends: 34096
[2021-06-01 19:35:35,538 INFO L226 Difference]: Without dead ends: 33696
[2021-06-01 19:35:35,539 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3805 ImplicationChecksByTransitivity, 2917.2ms TimeCoverageRelationStatistics Valid=1870, Invalid=10340, Unknown=0, NotChecked=0, Total=12210
[2021-06-01 19:35:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33696 states.
[2021-06-01 19:35:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33696 to 9279.
[2021-06-01 19:35:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9279 states, 9278 states have (on average 3.3040525975425736) internal successors, (30655), 9278 states have internal predecessors, (30655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9279 states to 9279 states and 30655 transitions.
[2021-06-01 19:35:35,849 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 30655 transitions. Word has length 44
[2021-06-01 19:35:35,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:35,850 INFO L482 AbstractCegarLoop]: Abstraction has 9279 states and 30655 transitions.
[2021-06-01 19:35:35,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 30655 transitions.
[2021-06-01 19:35:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:35,861 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:35,861 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:36,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:36,062 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1912970151, now seen corresponding path program 29 times
[2021-06-01 19:35:36,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:36,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606491772]
[2021-06-01 19:35:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:36,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:36,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606491772]
[2021-06-01 19:35:36,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606491772] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:36,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205097438]
[2021-06-01 19:35:36,385 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:36,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-01 19:35:36,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:36,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-06-01 19:35:36,417 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:36,747 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:35:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:35:36,749 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
[2021-06-01 19:35:36,750 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:36,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:36,760 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:36,760 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:55, output treesize:27
[2021-06-01 19:35:36,851 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:36,851 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 25 treesize of output 13
[2021-06-01 19:35:36,860 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:36,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:36,867 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:36,867 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:36,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205097438] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:36,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:36,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:36,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213081590]
[2021-06-01 19:35:36,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:36,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:36,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:36,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:36,933 INFO L87 Difference]: Start difference. First operand 9279 states and 30655 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:41,763 INFO L93 Difference]: Finished difference Result 35956 states and 119480 transitions.
[2021-06-01 19:35:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states.
[2021-06-01 19:35:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:41,835 INFO L225 Difference]: With dead ends: 35956
[2021-06-01 19:35:41,836 INFO L226 Difference]: Without dead ends: 35541
[2021-06-01 19:35:41,837 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5432 ImplicationChecksByTransitivity, 3484.7ms TimeCoverageRelationStatistics Valid=2393, Invalid=13863, Unknown=0, NotChecked=0, Total=16256
[2021-06-01 19:35:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35541 states.
[2021-06-01 19:35:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35541 to 9180.
[2021-06-01 19:35:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9180 states, 9179 states have (on average 3.302974180193921) internal successors, (30318), 9179 states have internal predecessors, (30318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9180 states to 9180 states and 30318 transitions.
[2021-06-01 19:35:42,148 INFO L78 Accepts]: Start accepts. Automaton has 9180 states and 30318 transitions. Word has length 44
[2021-06-01 19:35:42,148 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:42,149 INFO L482 AbstractCegarLoop]: Abstraction has 9180 states and 30318 transitions.
[2021-06-01 19:35:42,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9180 states and 30318 transitions.
[2021-06-01 19:35:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:42,161 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:42,161 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:42,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2021-06-01 19:35:42,362 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1715563337, now seen corresponding path program 30 times
[2021-06-01 19:35:42,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:42,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028596706]
[2021-06-01 19:35:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:42,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:42,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028596706]
[2021-06-01 19:35:42,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028596706] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:42,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526510496]
[2021-06-01 19:35:42,741 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:42,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-01 19:35:42,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:42,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:42,777 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:43,092 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:43,092 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 31 treesize of output 19
[2021-06-01 19:35:43,094 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:43,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:43,101 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:43,101 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:35:43,163 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:43,163 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 25 treesize of output 13
[2021-06-01 19:35:43,164 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:43,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:43,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:43,168 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:43,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526510496] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:43,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:43,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36
[2021-06-01 19:35:43,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599061627]
[2021-06-01 19:35:43,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states
[2021-06-01 19:35:43,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:43,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2021-06-01 19:35:43,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260
[2021-06-01 19:35:43,229 INFO L87 Difference]: Start difference. First operand 9180 states and 30318 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:48,272 INFO L93 Difference]: Finished difference Result 32902 states and 109101 transitions.
[2021-06-01 19:35:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states.
[2021-06-01 19:35:48,272 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:48,333 INFO L225 Difference]: With dead ends: 32902
[2021-06-01 19:35:48,333 INFO L226 Difference]: Without dead ends: 32417
[2021-06-01 19:35:48,334 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6854 ImplicationChecksByTransitivity, 4055.7ms TimeCoverageRelationStatistics Valid=2753, Invalid=17269, Unknown=0, NotChecked=0, Total=20022
[2021-06-01 19:35:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32417 states.
[2021-06-01 19:35:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32417 to 9018.
[2021-06-01 19:35:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9018 states, 9017 states have (on average 3.301763335921038) internal successors, (29772), 9017 states have internal predecessors, (29772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 29772 transitions.
[2021-06-01 19:35:48,598 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 29772 transitions. Word has length 44
[2021-06-01 19:35:48,598 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:48,598 INFO L482 AbstractCegarLoop]: Abstraction has 9018 states and 29772 transitions.
[2021-06-01 19:35:48,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 29772 transitions.
[2021-06-01 19:35:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:48,610 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:48,610 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:48,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:48,811 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:48,811 INFO L82 PathProgramCache]: Analyzing trace with hash 856011747, now seen corresponding path program 31 times
[2021-06-01 19:35:48,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:48,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915881791]
[2021-06-01 19:35:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-01 19:35:49,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:49,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915881791]
[2021-06-01 19:35:49,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915881791] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:49,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237714452]
[2021-06-01 19:35:49,091 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:49,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:49,130 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:49,451 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:49,451 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 31 treesize of output 19
[2021-06-01 19:35:49,454 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:49,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:49,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:49,462 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:35:49,523 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:49,523 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 25 treesize of output 13
[2021-06-01 19:35:49,524 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:49,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:49,528 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:49,528 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:49,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237714452] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:49,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:49,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35
[2021-06-01 19:35:49,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237004175]
[2021-06-01 19:35:49,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-01 19:35:49,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:49,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-01 19:35:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190
[2021-06-01 19:35:49,596 INFO L87 Difference]: Start difference. First operand 9018 states and 29772 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:35:54,955 INFO L93 Difference]: Finished difference Result 32479 states and 108314 transitions.
[2021-06-01 19:35:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states.
[2021-06-01 19:35:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:35:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:35:55,009 INFO L225 Difference]: With dead ends: 32479
[2021-06-01 19:35:55,010 INFO L226 Difference]: Without dead ends: 28654
[2021-06-01 19:35:55,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10023 ImplicationChecksByTransitivity, 4107.5ms TimeCoverageRelationStatistics Valid=3473, Invalid=22609, Unknown=0, NotChecked=0, Total=26082
[2021-06-01 19:35:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28654 states.
[2021-06-01 19:35:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28654 to 9358.
[2021-06-01 19:35:55,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9358 states, 9357 states have (on average 3.2972106444373197) internal successors, (30852), 9357 states have internal predecessors, (30852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9358 states to 9358 states and 30852 transitions.
[2021-06-01 19:35:55,327 INFO L78 Accepts]: Start accepts. Automaton has 9358 states and 30852 transitions. Word has length 44
[2021-06-01 19:35:55,327 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:35:55,327 INFO L482 AbstractCegarLoop]: Abstraction has 9358 states and 30852 transitions.
[2021-06-01 19:35:55,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:35:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9358 states and 30852 transitions.
[2021-06-01 19:35:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2021-06-01 19:35:55,339 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:35:55,339 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:35:55,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:55,539 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:35:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:35:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash 218619737, now seen corresponding path program 32 times
[2021-06-01 19:35:55,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:35:55,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797476158]
[2021-06-01 19:35:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:35:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:35:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-01 19:35:55,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:35:55,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797476158]
[2021-06-01 19:35:55,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797476158] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:55,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199543981]
[2021-06-01 19:35:55,838 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:35:55,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:35:55,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:35:55,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-06-01 19:35:55,876 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:35:56,178 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:56,179 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 31 treesize of output 19
[2021-06-01 19:35:56,180 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:56,186 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:56,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:56,186 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:24
[2021-06-01 19:35:56,255 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:35:56,255 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 25 treesize of output 13
[2021-06-01 19:35:56,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:56,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:35:56,260 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:35:56,260 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:35:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:35:56,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199543981] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:35:56,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:35:56,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35
[2021-06-01 19:35:56,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108654082]
[2021-06-01 19:35:56,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states
[2021-06-01 19:35:56,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:35:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-06-01 19:35:56,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190
[2021-06-01 19:35:56,327 INFO L87 Difference]: Start difference. First operand 9358 states and 30852 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:01,580 INFO L93 Difference]: Finished difference Result 35967 states and 119998 transitions.
[2021-06-01 19:36:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states.
[2021-06-01 19:36:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44
[2021-06-01 19:36:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:01,644 INFO L225 Difference]: With dead ends: 35967
[2021-06-01 19:36:01,644 INFO L226 Difference]: Without dead ends: 33259
[2021-06-01 19:36:01,645 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10209 ImplicationChecksByTransitivity, 4312.7ms TimeCoverageRelationStatistics Valid=3565, Invalid=23167, Unknown=0, NotChecked=0, Total=26732
[2021-06-01 19:36:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33259 states.
[2021-06-01 19:36:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33259 to 9428.
[2021-06-01 19:36:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9428 states, 9427 states have (on average 3.294049008168028) internal successors, (31053), 9427 states have internal predecessors, (31053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 31053 transitions.
[2021-06-01 19:36:01,926 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 31053 transitions. Word has length 44
[2021-06-01 19:36:01,926 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:01,926 INFO L482 AbstractCegarLoop]: Abstraction has 9428 states and 31053 transitions.
[2021-06-01 19:36:01,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 31053 transitions.
[2021-06-01 19:36:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-06-01 19:36:01,938 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:01,939 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:02,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93
[2021-06-01 19:36:02,141 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1309223083, now seen corresponding path program 33 times
[2021-06-01 19:36:02,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:02,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928198917]
[2021-06-01 19:36:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:02,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:02,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928198917]
[2021-06-01 19:36:02,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928198917] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:02,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129845396]
[2021-06-01 19:36:02,164 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 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
[2021-06-01 19:36:02,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:36:02,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:02,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-06-01 19:36:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-06-01 19:36:02,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129845396] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:02,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:02,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6
[2021-06-01 19:36:02,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249343601]
[2021-06-01 19:36:02,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-01 19:36:02,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:02,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-01 19:36:02,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-06-01 19:36:02,276 INFO L87 Difference]: Start difference. First operand 9428 states and 31053 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:02,337 INFO L93 Difference]: Finished difference Result 14357 states and 47370 transitions.
[2021-06-01 19:36:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-06-01 19:36:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47
[2021-06-01 19:36:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:02,361 INFO L225 Difference]: With dead ends: 14357
[2021-06-01 19:36:02,362 INFO L226 Difference]: Without dead ends: 14153
[2021-06-01 19:36:02,362 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-06-01 19:36:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14153 states.
[2021-06-01 19:36:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14153 to 10944.
[2021-06-01 19:36:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10944 states, 10943 states have (on average 3.3225806451612905) internal successors, (36359), 10943 states have internal predecessors, (36359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10944 states to 10944 states and 36359 transitions.
[2021-06-01 19:36:02,527 INFO L78 Accepts]: Start accepts. Automaton has 10944 states and 36359 transitions. Word has length 47
[2021-06-01 19:36:02,527 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:02,527 INFO L482 AbstractCegarLoop]: Abstraction has 10944 states and 36359 transitions.
[2021-06-01 19:36:02,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 10944 states and 36359 transitions.
[2021-06-01 19:36:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-06-01 19:36:02,541 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:02,541 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:02,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:02,742 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:02,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2079845064, now seen corresponding path program 34 times
[2021-06-01 19:36:02,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:02,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155855510]
[2021-06-01 19:36:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:02,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:02,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155855510]
[2021-06-01 19:36:02,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155855510] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:02,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215734055]
[2021-06-01 19:36:02,982 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:03,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:36:03,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:03,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-06-01 19:36:03,014 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:03,411 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:03,411 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 29 treesize of output 17
[2021-06-01 19:36:03,413 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:03,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:03,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:03,420 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:36:03,547 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:03,547 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 25 treesize of output 13
[2021-06-01 19:36:03,548 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:03,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:03,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:03,552 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:36:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:03,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215734055] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:03,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:03,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38
[2021-06-01 19:36:03,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702563949]
[2021-06-01 19:36:03,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-01 19:36:03,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-01 19:36:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406
[2021-06-01 19:36:03,612 INFO L87 Difference]: Start difference. First operand 10944 states and 36359 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:05,530 INFO L93 Difference]: Finished difference Result 26668 states and 88897 transitions.
[2021-06-01 19:36:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-01 19:36:05,531 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47
[2021-06-01 19:36:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:05,583 INFO L225 Difference]: With dead ends: 26668
[2021-06-01 19:36:05,584 INFO L226 Difference]: Without dead ends: 26368
[2021-06-01 19:36:05,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 1651.6ms TimeCoverageRelationStatistics Valid=858, Invalid=4994, Unknown=0, NotChecked=0, Total=5852
[2021-06-01 19:36:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26368 states.
[2021-06-01 19:36:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26368 to 11105.
[2021-06-01 19:36:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11105 states, 11104 states have (on average 3.3218659942363113) internal successors, (36886), 11104 states have internal predecessors, (36886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11105 states to 11105 states and 36886 transitions.
[2021-06-01 19:36:05,838 INFO L78 Accepts]: Start accepts. Automaton has 11105 states and 36886 transitions. Word has length 47
[2021-06-01 19:36:05,838 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:05,838 INFO L482 AbstractCegarLoop]: Abstraction has 11105 states and 36886 transitions.
[2021-06-01 19:36:05,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 11105 states and 36886 transitions.
[2021-06-01 19:36:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-06-01 19:36:05,853 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:05,853 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:06,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97
[2021-06-01 19:36:06,059 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1161766054, now seen corresponding path program 35 times
[2021-06-01 19:36:06,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:06,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771755541]
[2021-06-01 19:36:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:06,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:06,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771755541]
[2021-06-01 19:36:06,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771755541] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:06,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033957349]
[2021-06-01 19:36:06,331 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 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
[2021-06-01 19:36:06,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-01 19:36:06,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:06,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core
[2021-06-01 19:36:06,369 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:06,639 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:06,639 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 29 treesize of output 17
[2021-06-01 19:36:06,640 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:06,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:06,648 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:06,648 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:36:06,765 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:06,765 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 25 treesize of output 13
[2021-06-01 19:36:06,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:06,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:06,770 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:06,770 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:36:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:06,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033957349] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:06,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:06,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38
[2021-06-01 19:36:06,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338238753]
[2021-06-01 19:36:06,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-01 19:36:06,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:06,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-01 19:36:06,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406
[2021-06-01 19:36:06,831 INFO L87 Difference]: Start difference. First operand 11105 states and 36886 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:09,525 INFO L93 Difference]: Finished difference Result 32478 states and 107950 transitions.
[2021-06-01 19:36:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2021-06-01 19:36:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47
[2021-06-01 19:36:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:09,583 INFO L225 Difference]: With dead ends: 32478
[2021-06-01 19:36:09,583 INFO L226 Difference]: Without dead ends: 32178
[2021-06-01 19:36:09,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2576 ImplicationChecksByTransitivity, 2114.9ms TimeCoverageRelationStatistics Valid=1265, Invalid=7477, Unknown=0, NotChecked=0, Total=8742
[2021-06-01 19:36:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32178 states.
[2021-06-01 19:36:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32178 to 10959.
[2021-06-01 19:36:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10959 states, 10958 states have (on average 3.322139076473809) internal successors, (36404), 10958 states have internal predecessors, (36404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10959 states to 10959 states and 36404 transitions.
[2021-06-01 19:36:09,866 INFO L78 Accepts]: Start accepts. Automaton has 10959 states and 36404 transitions. Word has length 47
[2021-06-01 19:36:09,866 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:09,866 INFO L482 AbstractCegarLoop]: Abstraction has 10959 states and 36404 transitions.
[2021-06-01 19:36:09,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 10959 states and 36404 transitions.
[2021-06-01 19:36:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-06-01 19:36:09,882 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:09,882 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:10,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100
[2021-06-01 19:36:10,082 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:10,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1559125806, now seen corresponding path program 36 times
[2021-06-01 19:36:10,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:10,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141977122]
[2021-06-01 19:36:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:10,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:10,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141977122]
[2021-06-01 19:36:10,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141977122] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:10,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254129960]
[2021-06-01 19:36:10,331 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:10,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-01 19:36:10,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:10,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-06-01 19:36:10,369 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:10,649 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:10,649 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 29 treesize of output 17
[2021-06-01 19:36:10,650 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:10,655 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:10,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:10,656 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:36:10,787 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:10,787 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 25 treesize of output 13
[2021-06-01 19:36:10,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:10,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:10,792 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:10,792 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:36:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:10,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254129960] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:10,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:10,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38
[2021-06-01 19:36:10,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034719895]
[2021-06-01 19:36:10,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-01 19:36:10,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:10,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-01 19:36:10,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406
[2021-06-01 19:36:10,850 INFO L87 Difference]: Start difference. First operand 10959 states and 36404 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:12,736 INFO L93 Difference]: Finished difference Result 26320 states and 87742 transitions.
[2021-06-01 19:36:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-06-01 19:36:12,736 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47
[2021-06-01 19:36:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:12,784 INFO L225 Difference]: With dead ends: 26320
[2021-06-01 19:36:12,785 INFO L226 Difference]: Without dead ends: 26020
[2021-06-01 19:36:12,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1571.9ms TimeCoverageRelationStatistics Valid=863, Invalid=4989, Unknown=0, NotChecked=0, Total=5852
[2021-06-01 19:36:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26020 states.
[2021-06-01 19:36:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26020 to 10970.
[2021-06-01 19:36:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 10969 states have (on average 3.322271857051691) internal successors, (36442), 10969 states have internal predecessors, (36442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 36442 transitions.
[2021-06-01 19:36:13,023 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 36442 transitions. Word has length 47
[2021-06-01 19:36:13,023 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:13,023 INFO L482 AbstractCegarLoop]: Abstraction has 10970 states and 36442 transitions.
[2021-06-01 19:36:13,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 36442 transitions.
[2021-06-01 19:36:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-06-01 19:36:13,036 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:13,036 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:13,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103
[2021-06-01 19:36:13,237 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash 641046796, now seen corresponding path program 37 times
[2021-06-01 19:36:13,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:13,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998782635]
[2021-06-01 19:36:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:13,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:13,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998782635]
[2021-06-01 19:36:13,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998782635] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:13,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704604902]
[2021-06-01 19:36:13,546 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:13,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-06-01 19:36:13,584 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:13,882 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:13,882 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 29 treesize of output 17
[2021-06-01 19:36:13,883 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:13,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:13,889 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:13,889 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:20
[2021-06-01 19:36:14,000 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:14,000 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 25 treesize of output 13
[2021-06-01 19:36:14,001 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:14,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:14,005 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:14,005 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:36:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:14,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704604902] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:14,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:14,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38
[2021-06-01 19:36:14,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328087519]
[2021-06-01 19:36:14,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-01 19:36:14,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-01 19:36:14,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406
[2021-06-01 19:36:14,065 INFO L87 Difference]: Start difference. First operand 10970 states and 36442 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:16,806 INFO L93 Difference]: Finished difference Result 31704 states and 105322 transitions.
[2021-06-01 19:36:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2021-06-01 19:36:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47
[2021-06-01 19:36:16,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:16,873 INFO L225 Difference]: With dead ends: 31704
[2021-06-01 19:36:16,873 INFO L226 Difference]: Without dead ends: 31404
[2021-06-01 19:36:16,874 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 2121.5ms TimeCoverageRelationStatistics Valid=1225, Invalid=7147, Unknown=0, NotChecked=0, Total=8372
[2021-06-01 19:36:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states.
[2021-06-01 19:36:17,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 10809.
[2021-06-01 19:36:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10809 states, 10808 states have (on average 3.3230014803849) internal successors, (35915), 10808 states have internal predecessors, (35915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10809 states to 10809 states and 35915 transitions.
[2021-06-01 19:36:17,187 INFO L78 Accepts]: Start accepts. Automaton has 10809 states and 35915 transitions. Word has length 47
[2021-06-01 19:36:17,187 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:17,187 INFO L482 AbstractCegarLoop]: Abstraction has 10809 states and 35915 transitions.
[2021-06-01 19:36:17,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 10809 states and 35915 transitions.
[2021-06-01 19:36:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-06-01 19:36:17,204 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:17,204 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:17,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106
[2021-06-01 19:36:17,405 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash -590498608, now seen corresponding path program 38 times
[2021-06-01 19:36:17,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:17,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374386402]
[2021-06-01 19:36:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:36:17,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:17,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374386402]
[2021-06-01 19:36:17,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374386402] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:17,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098473314]
[2021-06-01 19:36:17,428 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:17,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:36:17,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:17,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-06-01 19:36:17,462 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:36:17,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098473314] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:17,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:17,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6
[2021-06-01 19:36:17,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483131875]
[2021-06-01 19:36:17,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-01 19:36:17,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-01 19:36:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-06-01 19:36:17,510 INFO L87 Difference]: Start difference. First operand 10809 states and 35915 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:17,579 INFO L93 Difference]: Finished difference Result 18453 states and 61519 transitions.
[2021-06-01 19:36:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-06-01 19:36:17,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51
[2021-06-01 19:36:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:17,616 INFO L225 Difference]: With dead ends: 18453
[2021-06-01 19:36:17,616 INFO L226 Difference]: Without dead ends: 17839
[2021-06-01 19:36:17,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-06-01 19:36:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17839 states.
[2021-06-01 19:36:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17839 to 12699.
[2021-06-01 19:36:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12699 states, 12698 states have (on average 3.361946763269806) internal successors, (42690), 12698 states have internal predecessors, (42690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12699 states to 12699 states and 42690 transitions.
[2021-06-01 19:36:17,872 INFO L78 Accepts]: Start accepts. Automaton has 12699 states and 42690 transitions. Word has length 51
[2021-06-01 19:36:17,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:17,872 INFO L482 AbstractCegarLoop]: Abstraction has 12699 states and 42690 transitions.
[2021-06-01 19:36:17,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 12699 states and 42690 transitions.
[2021-06-01 19:36:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-06-01 19:36:17,893 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:17,893 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:18,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:18,103 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:18,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1803464833, now seen corresponding path program 39 times
[2021-06-01 19:36:18,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:18,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150590135]
[2021-06-01 19:36:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:18,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:18,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150590135]
[2021-06-01 19:36:18,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150590135] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:18,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883592727]
[2021-06-01 19:36:18,417 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 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
[2021-06-01 19:36:18,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-01 19:36:18,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:18,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 34 conjunts are in the unsatisfiable core
[2021-06-01 19:36:18,454 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:18,770 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size
[2021-06-01 19:36:18,770 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 35 treesize of output 19
[2021-06-01 19:36:18,771 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:18,778 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:18,779 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:18,779 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:29
[2021-06-01 19:36:19,002 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:19,003 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 25 treesize of output 13
[2021-06-01 19:36:19,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:19,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:19,009 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:19,009 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:36:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:19,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883592727] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:19,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:19,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38
[2021-06-01 19:36:19,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929758731]
[2021-06-01 19:36:19,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-01 19:36:19,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-01 19:36:19,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406
[2021-06-01 19:36:19,073 INFO L87 Difference]: Start difference. First operand 12699 states and 42690 transitions. Second operand has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:26,228 INFO L93 Difference]: Finished difference Result 86229 states and 293816 transitions.
[2021-06-01 19:36:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states.
[2021-06-01 19:36:26,228 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51
[2021-06-01 19:36:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:26,410 INFO L225 Difference]: With dead ends: 86229
[2021-06-01 19:36:26,410 INFO L226 Difference]: Without dead ends: 84335
[2021-06-01 19:36:26,413 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18200 ImplicationChecksByTransitivity, 5523.5ms TimeCoverageRelationStatistics Valid=5140, Invalid=40442, Unknown=0, NotChecked=0, Total=45582
[2021-06-01 19:36:26,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84335 states.
[2021-06-01 19:36:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84335 to 13212.
[2021-06-01 19:36:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13211 states have (on average 3.3770342896071455) internal successors, (44614), 13211 states have internal predecessors, (44614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 44614 transitions.
[2021-06-01 19:36:27,226 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 44614 transitions. Word has length 51
[2021-06-01 19:36:27,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:27,227 INFO L482 AbstractCegarLoop]: Abstraction has 13212 states and 44614 transitions.
[2021-06-01 19:36:27,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 44614 transitions.
[2021-06-01 19:36:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-06-01 19:36:27,246 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:27,247 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:27,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:27,447 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -746735621, now seen corresponding path program 40 times
[2021-06-01 19:36:27,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:27,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736461258]
[2021-06-01 19:36:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:27,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:27,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736461258]
[2021-06-01 19:36:27,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736461258] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:27,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222087791]
[2021-06-01 19:36:27,763 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:27,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:36:27,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:27,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 32 conjunts are in the unsatisfiable core
[2021-06-01 19:36:27,797 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:28,062 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size
[2021-06-01 19:36:28,062 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 35 treesize of output 19
[2021-06-01 19:36:28,063 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:28,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:28,070 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:28,070 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:29
[2021-06-01 19:36:28,233 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-06-01 19:36:28,233 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 25 treesize of output 13
[2021-06-01 19:36:28,241 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:28,245 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:28,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:28,245 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:10
[2021-06-01 19:36:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:28,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222087791] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:28,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:28,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38
[2021-06-01 19:36:28,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941814949]
[2021-06-01 19:36:28,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states
[2021-06-01 19:36:28,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-06-01 19:36:28,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1246, Unknown=0, NotChecked=0, Total=1406
[2021-06-01 19:36:28,307 INFO L87 Difference]: Start difference. First operand 13212 states and 44614 transitions. Second operand has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:35,569 INFO L93 Difference]: Finished difference Result 80772 states and 276597 transitions.
[2021-06-01 19:36:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states.
[2021-06-01 19:36:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51
[2021-06-01 19:36:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:35,730 INFO L225 Difference]: With dead ends: 80772
[2021-06-01 19:36:35,730 INFO L226 Difference]: Without dead ends: 78736
[2021-06-01 19:36:35,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15383 ImplicationChecksByTransitivity, 5051.8ms TimeCoverageRelationStatistics Valid=4605, Invalid=34797, Unknown=0, NotChecked=0, Total=39402
[2021-06-01 19:36:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78736 states.
[2021-06-01 19:36:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78736 to 13623.
[2021-06-01 19:36:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13623 states, 13622 states have (on average 3.3828365878725593) internal successors, (46081), 13622 states have internal predecessors, (46081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 46081 transitions.
[2021-06-01 19:36:36,342 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 46081 transitions. Word has length 51
[2021-06-01 19:36:36,342 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:36,342 INFO L482 AbstractCegarLoop]: Abstraction has 13623 states and 46081 transitions.
[2021-06-01 19:36:36,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 46081 transitions.
[2021-06-01 19:36:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:36:36,361 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:36,361 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:36,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:36,562 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:36,562 INFO L82 PathProgramCache]: Analyzing trace with hash 643422605, now seen corresponding path program 41 times
[2021-06-01 19:36:36,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:36,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459128308]
[2021-06-01 19:36:36,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-06-01 19:36:36,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:36,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459128308]
[2021-06-01 19:36:36,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459128308] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:36,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535618298]
[2021-06-01 19:36:36,916 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:36:36,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-01 19:36:36,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:36,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:36:36,952 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:37,613 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:36:37,613 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 51 treesize of output 31
[2021-06-01 19:36:37,615 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:37,627 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:37,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:37,627 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:42
[2021-06-01 19:36:37,724 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:36:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:36:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:36:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:36:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:36:37,727 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:36:37,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:36:37,729 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:37,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:37,735 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:37,735 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:10
[2021-06-01 19:36:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:37,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535618298] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:37,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:37,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 42
[2021-06-01 19:36:37,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861158044]
[2021-06-01 19:36:37,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states
[2021-06-01 19:36:37,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2021-06-01 19:36:37,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722
[2021-06-01 19:36:37,812 INFO L87 Difference]: Start difference. First operand 13623 states and 46081 transitions. Second operand has 42 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:36:48,418 INFO L93 Difference]: Finished difference Result 92840 states and 316083 transitions.
[2021-06-01 19:36:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states.
[2021-06-01 19:36:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:36:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:36:48,605 INFO L225 Difference]: With dead ends: 92840
[2021-06-01 19:36:48,606 INFO L226 Difference]: Without dead ends: 88224
[2021-06-01 19:36:48,608 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21094 ImplicationChecksByTransitivity, 8578.9ms TimeCoverageRelationStatistics Valid=5822, Invalid=46848, Unknown=0, NotChecked=0, Total=52670
[2021-06-01 19:36:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88224 states.
[2021-06-01 19:36:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88224 to 14423.
[2021-06-01 19:36:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14423 states, 14422 states have (on average 3.370891693246429) internal successors, (48615), 14422 states have internal predecessors, (48615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14423 states to 14423 states and 48615 transitions.
[2021-06-01 19:36:49,308 INFO L78 Accepts]: Start accepts. Automaton has 14423 states and 48615 transitions. Word has length 54
[2021-06-01 19:36:49,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:36:49,308 INFO L482 AbstractCegarLoop]: Abstraction has 14423 states and 48615 transitions.
[2021-06-01 19:36:49,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:36:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14423 states and 48615 transitions.
[2021-06-01 19:36:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:36:49,327 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:36:49,327 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:36:49,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116
[2021-06-01 19:36:49,528 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:36:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:36:49,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1581400071, now seen corresponding path program 42 times
[2021-06-01 19:36:49,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:36:49,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979406099]
[2021-06-01 19:36:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:36:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:36:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:36:49,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:36:49,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979406099]
[2021-06-01 19:36:49,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979406099] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:49,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196858516]
[2021-06-01 19:36:49,863 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
[2021-06-01 19:36:49,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-01 19:36:49,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:36:49,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:36:49,899 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:36:50,409 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:36:50,410 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 51 treesize of output 31
[2021-06-01 19:36:50,411 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:50,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:50,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:50,418 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:36:50,578 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:36:50,578 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 38 treesize of output 18
[2021-06-01 19:36:50,579 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:50,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:36:50,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:36:50,584 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:36:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:36:50,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196858516] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:36:50,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:36:50,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:36:50,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273415672]
[2021-06-01 19:36:50,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:36:50,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:36:50,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:36:50,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:36:50,744 INFO L87 Difference]: Start difference. First operand 14423 states and 48615 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:37:00,556 INFO L93 Difference]: Finished difference Result 91747 states and 309740 transitions.
[2021-06-01 19:37:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states.
[2021-06-01 19:37:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:37:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:37:00,743 INFO L225 Difference]: With dead ends: 91747
[2021-06-01 19:37:00,743 INFO L226 Difference]: Without dead ends: 90897
[2021-06-01 19:37:00,745 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19894 ImplicationChecksByTransitivity, 7542.9ms TimeCoverageRelationStatistics Valid=5038, Invalid=45812, Unknown=0, NotChecked=0, Total=50850
[2021-06-01 19:37:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90897 states.
[2021-06-01 19:37:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90897 to 15287.
[2021-06-01 19:37:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15287 states, 15286 states have (on average 3.3639931963888525) internal successors, (51422), 15286 states have internal predecessors, (51422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15287 states to 15287 states and 51422 transitions.
[2021-06-01 19:37:01,488 INFO L78 Accepts]: Start accepts. Automaton has 15287 states and 51422 transitions. Word has length 54
[2021-06-01 19:37:01,489 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:37:01,489 INFO L482 AbstractCegarLoop]: Abstraction has 15287 states and 51422 transitions.
[2021-06-01 19:37:01,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15287 states and 51422 transitions.
[2021-06-01 19:37:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:37:01,509 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:37:01,509 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:37:01,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:37:01,710 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:37:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:37:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2088723877, now seen corresponding path program 43 times
[2021-06-01 19:37:01,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:37:01,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852210937]
[2021-06-01 19:37:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:37:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:37:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:37:02,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:37:02,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852210937]
[2021-06-01 19:37:02,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852210937] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:02,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904683135]
[2021-06-01 19:37:02,041 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
[2021-06-01 19:37:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:37:02,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:37:02,074 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:37:02,572 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:02,572 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 49 treesize of output 29
[2021-06-01 19:37:02,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:02,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:02,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:02,584 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:31
[2021-06-01 19:37:02,837 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:02,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:37:02,838 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:02,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:02,842 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:02,842 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:37:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:37:02,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904683135] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:02,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:37:02,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:37:02,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051393059]
[2021-06-01 19:37:02,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:37:02,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:37:02,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:37:02,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:37:02,911 INFO L87 Difference]: Start difference. First operand 15287 states and 51422 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:37:14,542 INFO L93 Difference]: Finished difference Result 101039 states and 340837 transitions.
[2021-06-01 19:37:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states.
[2021-06-01 19:37:14,542 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:37:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:37:14,783 INFO L225 Difference]: With dead ends: 101039
[2021-06-01 19:37:14,783 INFO L226 Difference]: Without dead ends: 100149
[2021-06-01 19:37:14,786 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25131 ImplicationChecksByTransitivity, 9342.9ms TimeCoverageRelationStatistics Valid=6462, Invalid=56288, Unknown=0, NotChecked=0, Total=62750
[2021-06-01 19:37:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100149 states.
[2021-06-01 19:37:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100149 to 15370.
[2021-06-01 19:37:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15370 states, 15369 states have (on average 3.364695165593077) internal successors, (51712), 15369 states have internal predecessors, (51712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15370 states to 15370 states and 51712 transitions.
[2021-06-01 19:37:15,581 INFO L78 Accepts]: Start accepts. Automaton has 15370 states and 51712 transitions. Word has length 54
[2021-06-01 19:37:15,581 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:37:15,581 INFO L482 AbstractCegarLoop]: Abstraction has 15370 states and 51712 transitions.
[2021-06-01 19:37:15,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 15370 states and 51712 transitions.
[2021-06-01 19:37:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:37:15,602 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:37:15,602 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:37:15,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122
[2021-06-01 19:37:15,805 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:37:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:37:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1288164409, now seen corresponding path program 44 times
[2021-06-01 19:37:15,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:37:15,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160288335]
[2021-06-01 19:37:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:37:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:37:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:37:16,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:37:16,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160288335]
[2021-06-01 19:37:16,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160288335] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:16,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451690820]
[2021-06-01 19:37:16,180 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
[2021-06-01 19:37:16,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:37:16,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:37:16,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:37:16,221 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:37:16,838 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:16,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 29
[2021-06-01 19:37:16,840 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:16,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:16,850 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:16,850 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:31
[2021-06-01 19:37:17,005 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:17,006 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 38 treesize of output 18
[2021-06-01 19:37:17,007 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:17,010 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:17,010 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:17,010 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:37:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:37:17,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451690820] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:17,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:37:17,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:37:17,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102123850]
[2021-06-01 19:37:17,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:37:17,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:37:17,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:37:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:37:17,377 INFO L87 Difference]: Start difference. First operand 15370 states and 51712 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:17,848 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27
[2021-06-01 19:37:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:37:31,479 INFO L93 Difference]: Finished difference Result 124978 states and 424154 transitions.
[2021-06-01 19:37:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states.
[2021-06-01 19:37:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:37:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:37:31,776 INFO L225 Difference]: With dead ends: 124978
[2021-06-01 19:37:31,777 INFO L226 Difference]: Without dead ends: 121408
[2021-06-01 19:37:31,780 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35074 ImplicationChecksByTransitivity, 11927.8ms TimeCoverageRelationStatistics Valid=8395, Invalid=75415, Unknown=0, NotChecked=0, Total=83810
[2021-06-01 19:37:31,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121408 states.
[2021-06-01 19:37:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121408 to 17376.
[2021-06-01 19:37:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 17375 states have (on average 3.3524028776978416) internal successors, (58248), 17375 states have internal predecessors, (58248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 58248 transitions.
[2021-06-01 19:37:33,136 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 58248 transitions. Word has length 54
[2021-06-01 19:37:33,137 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:37:33,137 INFO L482 AbstractCegarLoop]: Abstraction has 17376 states and 58248 transitions.
[2021-06-01 19:37:33,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 58248 transitions.
[2021-06-01 19:37:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:37:33,161 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:37:33,161 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:37:33,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125
[2021-06-01 19:37:33,362 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:37:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:37:33,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1594702095, now seen corresponding path program 45 times
[2021-06-01 19:37:33,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:37:33,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226506774]
[2021-06-01 19:37:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:37:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:37:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:37:33,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:37:33,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226506774]
[2021-06-01 19:37:33,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226506774] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:33,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658299498]
[2021-06-01 19:37:33,724 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:37:33,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-01 19:37:33,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:37:33,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-06-01 19:37:33,762 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:37:34,448 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:34,448 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 51 treesize of output 31
[2021-06-01 19:37:34,449 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:34,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:34,459 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:34,459 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:37:34,575 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:34,575 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 38 treesize of output 18
[2021-06-01 19:37:34,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:34,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:34,580 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:34,580 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:37:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:37:34,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658299498] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:34,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:37:34,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:37:34,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276148417]
[2021-06-01 19:37:34,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:37:34,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:37:34,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:37:34,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1620, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:37:34,652 INFO L87 Difference]: Start difference. First operand 17376 states and 58248 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:37:45,538 INFO L93 Difference]: Finished difference Result 100564 states and 339046 transitions.
[2021-06-01 19:37:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states.
[2021-06-01 19:37:45,539 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:37:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:37:45,950 INFO L225 Difference]: With dead ends: 100564
[2021-06-01 19:37:45,950 INFO L226 Difference]: Without dead ends: 99734
[2021-06-01 19:37:45,954 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22988 ImplicationChecksByTransitivity, 8704.4ms TimeCoverageRelationStatistics Valid=5801, Invalid=52039, Unknown=0, NotChecked=0, Total=57840
[2021-06-01 19:37:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99734 states.
[2021-06-01 19:37:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99734 to 17519.
[2021-06-01 19:37:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17519 states, 17518 states have (on average 3.3529512501427106) internal successors, (58737), 17518 states have internal predecessors, (58737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17519 states to 17519 states and 58737 transitions.
[2021-06-01 19:37:46,919 INFO L78 Accepts]: Start accepts. Automaton has 17519 states and 58737 transitions. Word has length 54
[2021-06-01 19:37:46,919 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:37:46,919 INFO L482 AbstractCegarLoop]: Abstraction has 17519 states and 58737 transitions.
[2021-06-01 19:37:46,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:37:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17519 states and 58737 transitions.
[2021-06-01 19:37:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:37:46,942 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:37:46,942 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:37:47,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128
[2021-06-01 19:37:47,153 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:37:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:37:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash 676623085, now seen corresponding path program 46 times
[2021-06-01 19:37:47,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:37:47,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582594598]
[2021-06-01 19:37:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:37:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:37:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:37:47,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:37:47,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582594598]
[2021-06-01 19:37:47,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582594598] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:47,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976833924]
[2021-06-01 19:37:47,527 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:37:47,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:37:47,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:37:47,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:37:47,579 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:37:48,275 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:48,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:37:48,276 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:48,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:48,285 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:48,285 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:37:48,401 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:37:48,401 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 38 treesize of output 18
[2021-06-01 19:37:48,402 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:48,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:37:48,405 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:37:48,405 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:37:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:37:48,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976833924] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:37:48,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:37:48,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:37:48,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108155666]
[2021-06-01 19:37:48,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:37:48,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:37:48,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:37:48,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:37:48,489 INFO L87 Difference]: Start difference. First operand 17519 states and 58737 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:38:02,120 INFO L93 Difference]: Finished difference Result 106844 states and 359808 transitions.
[2021-06-01 19:38:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states.
[2021-06-01 19:38:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:38:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:38:02,362 INFO L225 Difference]: With dead ends: 106844
[2021-06-01 19:38:02,363 INFO L226 Difference]: Without dead ends: 105974
[2021-06-01 19:38:02,365 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32263 ImplicationChecksByTransitivity, 10961.0ms TimeCoverageRelationStatistics Valid=7783, Invalid=69779, Unknown=0, NotChecked=0, Total=77562
[2021-06-01 19:38:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105974 states.
[2021-06-01 19:38:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105974 to 16906.
[2021-06-01 19:38:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16906 states, 16905 states have (on average 3.3510795622596863) internal successors, (56650), 16905 states have internal predecessors, (56650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16906 states to 16906 states and 56650 transitions.
[2021-06-01 19:38:03,408 INFO L78 Accepts]: Start accepts. Automaton has 16906 states and 56650 transitions. Word has length 54
[2021-06-01 19:38:03,408 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:38:03,408 INFO L482 AbstractCegarLoop]: Abstraction has 16906 states and 56650 transitions.
[2021-06-01 19:38:03,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 16906 states and 56650 transitions.
[2021-06-01 19:38:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:38:03,429 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:38:03,430 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:38:03,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131
[2021-06-01 19:38:03,630 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:38:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:38:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1343056893, now seen corresponding path program 47 times
[2021-06-01 19:38:03,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:38:03,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400491370]
[2021-06-01 19:38:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:38:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:38:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:38:03,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:38:03,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400491370]
[2021-06-01 19:38:03,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400491370] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:03,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273771222]
[2021-06-01 19:38:03,986 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:04,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-01 19:38:04,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:38:04,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-06-01 19:38:04,032 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:38:04,518 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 26
[2021-06-01 19:38:04,904 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:38:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:04,906 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:04,906 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:04,908 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:38:04,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:38:04,909 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:04,918 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:04,919 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:04,919 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:78, output treesize:37
[2021-06-01 19:38:05,002 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:05,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:38:05,005 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:05,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:05,009 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:05,009 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:38:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:38:05,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273771222] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:05,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:38:05,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:38:05,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593523898]
[2021-06-01 19:38:05,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:38:05,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:38:05,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:38:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:38:05,096 INFO L87 Difference]: Start difference. First operand 16906 states and 56650 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:38:15,864 INFO L93 Difference]: Finished difference Result 86669 states and 292345 transitions.
[2021-06-01 19:38:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states.
[2021-06-01 19:38:15,864 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:38:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:38:16,042 INFO L225 Difference]: With dead ends: 86669
[2021-06-01 19:38:16,042 INFO L226 Difference]: Without dead ends: 85459
[2021-06-01 19:38:16,044 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20939 ImplicationChecksByTransitivity, 8832.4ms TimeCoverageRelationStatistics Valid=5562, Invalid=48030, Unknown=0, NotChecked=0, Total=53592
[2021-06-01 19:38:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85459 states.
[2021-06-01 19:38:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85459 to 16784.
[2021-06-01 19:38:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16784 states, 16783 states have (on average 3.352320800810344) internal successors, (56262), 16783 states have internal predecessors, (56262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16784 states to 16784 states and 56262 transitions.
[2021-06-01 19:38:16,668 INFO L78 Accepts]: Start accepts. Automaton has 16784 states and 56262 transitions. Word has length 54
[2021-06-01 19:38:16,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:38:16,669 INFO L482 AbstractCegarLoop]: Abstraction has 16784 states and 56262 transitions.
[2021-06-01 19:38:16,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16784 states and 56262 transitions.
[2021-06-01 19:38:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:38:16,691 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:38:16,691 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:38:16,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:16,905 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:38:16,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:38:16,905 INFO L82 PathProgramCache]: Analyzing trace with hash 770927037, now seen corresponding path program 48 times
[2021-06-01 19:38:16,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:38:16,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237649992]
[2021-06-01 19:38:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:38:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:38:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:38:17,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:38:17,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237649992]
[2021-06-01 19:38:17,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237649992] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:17,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934471498]
[2021-06-01 19:38:17,302 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:17,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-01 19:38:17,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:38:17,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-06-01 19:38:17,353 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:38:17,875 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:17,875 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 51 treesize of output 31
[2021-06-01 19:38:17,876 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:17,883 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:17,883 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:17,884 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:38:18,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:18,174 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:18,175 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:18,176 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:38:18,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:38:18,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18
[2021-06-01 19:38:18,179 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:18,186 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:18,188 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:18,188 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:10
[2021-06-01 19:38:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:38:18,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934471498] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:18,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:38:18,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:38:18,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328293697]
[2021-06-01 19:38:18,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:38:18,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:38:18,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:38:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:38:18,284 INFO L87 Difference]: Start difference. First operand 16784 states and 56262 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:38:30,827 INFO L93 Difference]: Finished difference Result 91509 states and 308567 transitions.
[2021-06-01 19:38:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states.
[2021-06-01 19:38:30,827 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:38:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:38:31,018 INFO L225 Difference]: With dead ends: 91509
[2021-06-01 19:38:31,018 INFO L226 Difference]: Without dead ends: 90649
[2021-06-01 19:38:31,020 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23550 ImplicationChecksByTransitivity, 8977.6ms TimeCoverageRelationStatistics Valid=5558, Invalid=55204, Unknown=0, NotChecked=0, Total=60762
[2021-06-01 19:38:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90649 states.
[2021-06-01 19:38:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90649 to 17604.
[2021-06-01 19:38:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17604 states, 17603 states have (on average 3.3469295006532978) internal successors, (58916), 17603 states have internal predecessors, (58916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17604 states to 17604 states and 58916 transitions.
[2021-06-01 19:38:31,756 INFO L78 Accepts]: Start accepts. Automaton has 17604 states and 58916 transitions. Word has length 54
[2021-06-01 19:38:31,756 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:38:31,756 INFO L482 AbstractCegarLoop]: Abstraction has 17604 states and 58916 transitions.
[2021-06-01 19:38:31,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17604 states and 58916 transitions.
[2021-06-01 19:38:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:38:31,862 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:38:31,862 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:38:32,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137
[2021-06-01 19:38:32,062 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:38:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:38:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash -347938093, now seen corresponding path program 49 times
[2021-06-01 19:38:32,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:38:32,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197222924]
[2021-06-01 19:38:32,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:38:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:38:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:38:32,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:38:32,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197222924]
[2021-06-01 19:38:32,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197222924] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:32,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975547100]
[2021-06-01 19:38:32,448 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:38:32,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:38:32,491 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:38:33,086 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:33,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:38:33,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:33,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:33,095 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:33,095 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:38:33,218 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:33,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:38:33,219 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:33,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:33,223 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:33,223 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:38:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:38:33,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975547100] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:33,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:38:33,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:38:33,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060878169]
[2021-06-01 19:38:33,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:38:33,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:38:33,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:38:33,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:38:33,296 INFO L87 Difference]: Start difference. First operand 17604 states and 58916 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:38:43,861 INFO L93 Difference]: Finished difference Result 77944 states and 263222 transitions.
[2021-06-01 19:38:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states.
[2021-06-01 19:38:43,861 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:38:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:38:44,016 INFO L225 Difference]: With dead ends: 77944
[2021-06-01 19:38:44,017 INFO L226 Difference]: Without dead ends: 77094
[2021-06-01 19:38:44,019 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18674 ImplicationChecksByTransitivity, 8297.9ms TimeCoverageRelationStatistics Valid=5058, Invalid=44004, Unknown=0, NotChecked=0, Total=49062
[2021-06-01 19:38:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77094 states.
[2021-06-01 19:38:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77094 to 18339.
[2021-06-01 19:38:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18339 states, 18338 states have (on average 3.3434943832479007) internal successors, (61313), 18338 states have internal predecessors, (61313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18339 states to 18339 states and 61313 transitions.
[2021-06-01 19:38:44,675 INFO L78 Accepts]: Start accepts. Automaton has 18339 states and 61313 transitions. Word has length 54
[2021-06-01 19:38:44,675 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:38:44,675 INFO L482 AbstractCegarLoop]: Abstraction has 18339 states and 61313 transitions.
[2021-06-01 19:38:44,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18339 states and 61313 transitions.
[2021-06-01 19:38:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:38:44,699 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:38:44,699 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:38:44,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:44,899 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:38:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:38:44,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1720996819, now seen corresponding path program 50 times
[2021-06-01 19:38:44,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:38:44,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631025516]
[2021-06-01 19:38:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:38:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:38:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-06-01 19:38:45,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:38:45,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631025516]
[2021-06-01 19:38:45,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631025516] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:45,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020429737]
[2021-06-01 19:38:45,306 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:45,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:38:45,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:38:45,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:38:45,340 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:38:45,869 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:45,869 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 51 treesize of output 31
[2021-06-01 19:38:45,870 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:45,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:45,877 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:45,877 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:38:46,039 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:46,039 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 38 treesize of output 18
[2021-06-01 19:38:46,040 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:46,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:46,044 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:46,044 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:38:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:38:46,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020429737] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:46,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:38:46,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:38:46,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811827856]
[2021-06-01 19:38:46,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:38:46,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:38:46,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:38:46,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:38:46,126 INFO L87 Difference]: Start difference. First operand 18339 states and 61313 transitions. Second operand has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:38:56,734 INFO L93 Difference]: Finished difference Result 91695 states and 308842 transitions.
[2021-06-01 19:38:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states.
[2021-06-01 19:38:56,734 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:38:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:38:56,917 INFO L225 Difference]: With dead ends: 91695
[2021-06-01 19:38:56,917 INFO L226 Difference]: Without dead ends: 90875
[2021-06-01 19:38:56,919 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20016 ImplicationChecksByTransitivity, 7713.3ms TimeCoverageRelationStatistics Valid=4724, Invalid=48406, Unknown=0, NotChecked=0, Total=53130
[2021-06-01 19:38:57,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90875 states.
[2021-06-01 19:38:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90875 to 18867.
[2021-06-01 19:38:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18867 states, 18866 states have (on average 3.336319304569066) internal successors, (62943), 18866 states have internal predecessors, (62943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18867 states to 18867 states and 62943 transitions.
[2021-06-01 19:38:57,702 INFO L78 Accepts]: Start accepts. Automaton has 18867 states and 62943 transitions. Word has length 54
[2021-06-01 19:38:57,702 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:38:57,702 INFO L482 AbstractCegarLoop]: Abstraction has 18867 states and 62943 transitions.
[2021-06-01 19:38:57,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:38:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18867 states and 62943 transitions.
[2021-06-01 19:38:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:38:57,734 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:38:57,734 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:38:57,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:38:57,957 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:38:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:38:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1213673013, now seen corresponding path program 51 times
[2021-06-01 19:38:57,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:38:57,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996022717]
[2021-06-01 19:38:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:38:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:38:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-06-01 19:38:58,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:38:58,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996022717]
[2021-06-01 19:38:58,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996022717] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:58,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793190800]
[2021-06-01 19:38:58,319 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
[2021-06-01 19:38:58,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-01 19:38:58,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:38:58,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-06-01 19:38:58,363 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:38:58,890 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:58,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:38:58,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:58,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:58,899 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:58,899 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:38:59,061 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:38:59,062 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 38 treesize of output 18
[2021-06-01 19:38:59,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:59,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:38:59,066 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:38:59,066 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:38:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:38:59,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793190800] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:38:59,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:38:59,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:38:59,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693650805]
[2021-06-01 19:38:59,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:38:59,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:38:59,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:38:59,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:38:59,140 INFO L87 Difference]: Start difference. First operand 18867 states and 62943 transitions. Second operand has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:39:12,603 INFO L93 Difference]: Finished difference Result 116913 states and 393329 transitions.
[2021-06-01 19:39:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states.
[2021-06-01 19:39:12,604 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:39:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:39:12,863 INFO L225 Difference]: With dead ends: 116913
[2021-06-01 19:39:12,863 INFO L226 Difference]: Without dead ends: 116083
[2021-06-01 19:39:12,869 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29781 ImplicationChecksByTransitivity, 10497.2ms TimeCoverageRelationStatistics Valid=6740, Invalid=69160, Unknown=0, NotChecked=0, Total=75900
[2021-06-01 19:39:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116083 states.
[2021-06-01 19:39:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116083 to 20115.
[2021-06-01 19:39:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20115 states, 20114 states have (on average 3.33016804215969) internal successors, (66983), 20114 states have internal predecessors, (66983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20115 states to 20115 states and 66983 transitions.
[2021-06-01 19:39:14,172 INFO L78 Accepts]: Start accepts. Automaton has 20115 states and 66983 transitions. Word has length 54
[2021-06-01 19:39:14,172 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:39:14,172 INFO L482 AbstractCegarLoop]: Abstraction has 20115 states and 66983 transitions.
[2021-06-01 19:39:14,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 20115 states and 66983 transitions.
[2021-06-01 19:39:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:39:14,198 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:39:14,198 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:39:14,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146
[2021-06-01 19:39:14,398 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:39:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:39:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash 295594003, now seen corresponding path program 52 times
[2021-06-01 19:39:14,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:39:14,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256872356]
[2021-06-01 19:39:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:39:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:39:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-06-01 19:39:14,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:39:14,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256872356]
[2021-06-01 19:39:14,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256872356] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:14,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817565554]
[2021-06-01 19:39:14,772 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
[2021-06-01 19:39:14,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:39:14,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:39:14,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:39:14,805 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:39:15,314 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:15,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 29
[2021-06-01 19:39:15,315 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:15,322 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:15,323 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:15,323 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:31
[2021-06-01 19:39:15,481 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:15,481 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 38 treesize of output 18
[2021-06-01 19:39:15,482 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:15,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:15,486 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:15,486 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:39:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:39:15,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817565554] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:15,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:39:15,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:39:15,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219778405]
[2021-06-01 19:39:15,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:39:15,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:39:15,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:39:15,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:39:15,561 INFO L87 Difference]: Start difference. First operand 20115 states and 66983 transitions. Second operand has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:26,289 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37
[2021-06-01 19:39:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:39:29,917 INFO L93 Difference]: Finished difference Result 124269 states and 417429 transitions.
[2021-06-01 19:39:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states.
[2021-06-01 19:39:29,917 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:39:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:39:30,197 INFO L225 Difference]: With dead ends: 124269
[2021-06-01 19:39:30,197 INFO L226 Difference]: Without dead ends: 122609
[2021-06-01 19:39:30,201 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28590 ImplicationChecksByTransitivity, 11161.6ms TimeCoverageRelationStatistics Valid=6899, Invalid=66271, Unknown=0, NotChecked=0, Total=73170
[2021-06-01 19:39:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122609 states.
[2021-06-01 19:39:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122609 to 21964.
[2021-06-01 19:39:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21964 states, 21963 states have (on average 3.322087146564677) internal successors, (72963), 21963 states have internal predecessors, (72963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21964 states to 21964 states and 72963 transitions.
[2021-06-01 19:39:31,638 INFO L78 Accepts]: Start accepts. Automaton has 21964 states and 72963 transitions. Word has length 54
[2021-06-01 19:39:31,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:39:31,638 INFO L482 AbstractCegarLoop]: Abstraction has 21964 states and 72963 transitions.
[2021-06-01 19:39:31,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 21964 states and 72963 transitions.
[2021-06-01 19:39:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:39:31,666 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:39:31,666 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:39:31,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149
[2021-06-01 19:39:31,867 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:39:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:39:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash 350486487, now seen corresponding path program 53 times
[2021-06-01 19:39:31,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:39:31,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332114290]
[2021-06-01 19:39:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:39:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:39:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-06-01 19:39:32,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:39:32,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332114290]
[2021-06-01 19:39:32,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332114290] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:32,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493536904]
[2021-06-01 19:39:32,230 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
[2021-06-01 19:39:32,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-01 19:39:32,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:39:32,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-06-01 19:39:32,268 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:39:32,963 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:32,963 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 51 treesize of output 31
[2021-06-01 19:39:32,964 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:32,971 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:32,972 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:32,972 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:37
[2021-06-01 19:39:33,054 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:33,054 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 38 treesize of output 18
[2021-06-01 19:39:33,055 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:33,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:33,059 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:33,059 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:39:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:39:33,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493536904] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:33,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:39:33,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:39:33,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794714044]
[2021-06-01 19:39:33,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:39:33,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:39:33,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:39:33,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:39:33,132 INFO L87 Difference]: Start difference. First operand 21964 states and 72963 transitions. Second operand has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:39:40,155 INFO L93 Difference]: Finished difference Result 69919 states and 235479 transitions.
[2021-06-01 19:39:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states.
[2021-06-01 19:39:40,155 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:39:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:39:40,299 INFO L225 Difference]: With dead ends: 69919
[2021-06-01 19:39:40,299 INFO L226 Difference]: Without dead ends: 68859
[2021-06-01 19:39:40,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11074 ImplicationChecksByTransitivity, 5485.6ms TimeCoverageRelationStatistics Valid=3234, Invalid=27918, Unknown=0, NotChecked=0, Total=31152
[2021-06-01 19:39:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68859 states.
[2021-06-01 19:39:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68859 to 22062.
[2021-06-01 19:39:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22062 states, 22061 states have (on average 3.3209736639318255) internal successors, (73264), 22061 states have internal predecessors, (73264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22062 states to 22062 states and 73264 transitions.
[2021-06-01 19:39:41,085 INFO L78 Accepts]: Start accepts. Automaton has 22062 states and 73264 transitions. Word has length 54
[2021-06-01 19:39:41,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:39:41,085 INFO L482 AbstractCegarLoop]: Abstraction has 22062 states and 73264 transitions.
[2021-06-01 19:39:41,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 22062 states and 73264 transitions.
[2021-06-01 19:39:41,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:39:41,115 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:39:41,115 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:39:41,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,54 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:39:41,316 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:39:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:39:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1417516959, now seen corresponding path program 54 times
[2021-06-01 19:39:41,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:39:41,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087469036]
[2021-06-01 19:39:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:39:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:39:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-06-01 19:39:41,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:39:41,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087469036]
[2021-06-01 19:39:41,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087469036] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:41,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217939194]
[2021-06-01 19:39:41,690 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:39:41,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-01 19:39:41,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:39:41,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:39:41,740 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:39:42,042 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 25
[2021-06-01 19:39:42,426 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:42,427 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 51 treesize of output 31
[2021-06-01 19:39:42,428 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:42,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:42,436 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:42,436 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:39:42,549 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:42,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:39:42,550 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:42,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:42,554 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:42,554 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:39:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:39:42,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217939194] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:42,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:39:42,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:39:42,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387638386]
[2021-06-01 19:39:42,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:39:42,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:39:42,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:39:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:39:42,631 INFO L87 Difference]: Start difference. First operand 22062 states and 73264 transitions. Second operand has 43 states, 43 states have (on average 2.0) internal successors, (86), 43 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:39:54,691 INFO L93 Difference]: Finished difference Result 150720 states and 516372 transitions.
[2021-06-01 19:39:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states.
[2021-06-01 19:39:54,691 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 43 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:39:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:39:55,032 INFO L225 Difference]: With dead ends: 150720
[2021-06-01 19:39:55,033 INFO L226 Difference]: Without dead ends: 145955
[2021-06-01 19:39:55,036 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28507 ImplicationChecksByTransitivity, 9633.4ms TimeCoverageRelationStatistics Valid=7069, Invalid=62891, Unknown=0, NotChecked=0, Total=69960
[2021-06-01 19:39:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145955 states.
[2021-06-01 19:39:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145955 to 25238.
[2021-06-01 19:39:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25238 states, 25237 states have (on average 3.303245235170583) internal successors, (83364), 25237 states have internal predecessors, (83364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25238 states to 25238 states and 83364 transitions.
[2021-06-01 19:39:56,806 INFO L78 Accepts]: Start accepts. Automaton has 25238 states and 83364 transitions. Word has length 54
[2021-06-01 19:39:56,806 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:39:56,807 INFO L482 AbstractCegarLoop]: Abstraction has 25238 states and 83364 transitions.
[2021-06-01 19:39:56,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.0) internal successors, (86), 43 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 25238 states and 83364 transitions.
[2021-06-01 19:39:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:39:56,841 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:39:56,841 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:39:57,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155
[2021-06-01 19:39:57,041 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:39:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:39:57,042 INFO L82 PathProgramCache]: Analyzing trace with hash 668210515, now seen corresponding path program 55 times
[2021-06-01 19:39:57,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:39:57,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812259397]
[2021-06-01 19:39:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:39:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:39:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:39:57,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:39:57,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812259397]
[2021-06-01 19:39:57,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812259397] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:57,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341037492]
[2021-06-01 19:39:57,435 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:39:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:39:57,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:39:57,470 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:39:58,158 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:58,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 29
[2021-06-01 19:39:58,160 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:58,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:58,167 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:58,167 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:31
[2021-06-01 19:39:58,312 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:39:58,313 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 38 treesize of output 18
[2021-06-01 19:39:58,314 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:58,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:39:58,318 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:39:58,318 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:39:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:39:58,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341037492] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:39:58,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:39:58,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 44
[2021-06-01 19:39:58,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270252383]
[2021-06-01 19:39:58,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states
[2021-06-01 19:39:58,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:39:58,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2021-06-01 19:39:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1700, Unknown=0, NotChecked=0, Total=1892
[2021-06-01 19:39:58,386 INFO L87 Difference]: Start difference. First operand 25238 states and 83364 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:39:59,270 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36
[2021-06-01 19:40:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:40:09,217 INFO L93 Difference]: Finished difference Result 105434 states and 354160 transitions.
[2021-06-01 19:40:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states.
[2021-06-01 19:40:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:40:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:40:09,640 INFO L225 Difference]: With dead ends: 105434
[2021-06-01 19:40:09,640 INFO L226 Difference]: Without dead ends: 104584
[2021-06-01 19:40:09,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23552 ImplicationChecksByTransitivity, 8714.8ms TimeCoverageRelationStatistics Valid=5754, Invalid=53538, Unknown=0, NotChecked=0, Total=59292
[2021-06-01 19:40:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104584 states.
[2021-06-01 19:40:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104584 to 26860.
[2021-06-01 19:40:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26860 states, 26859 states have (on average 3.29863360512305) internal successors, (88598), 26859 states have internal predecessors, (88598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:10,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26860 states to 26860 states and 88598 transitions.
[2021-06-01 19:40:10,723 INFO L78 Accepts]: Start accepts. Automaton has 26860 states and 88598 transitions. Word has length 54
[2021-06-01 19:40:10,723 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:40:10,723 INFO L482 AbstractCegarLoop]: Abstraction has 26860 states and 88598 transitions.
[2021-06-01 19:40:10,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 26860 states and 88598 transitions.
[2021-06-01 19:40:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:40:10,931 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:40:10,937 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:40:11,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158
[2021-06-01 19:40:11,153 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:40:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:40:11,153 INFO L82 PathProgramCache]: Analyzing trace with hash 160886709, now seen corresponding path program 56 times
[2021-06-01 19:40:11,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:40:11,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615965977]
[2021-06-01 19:40:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:40:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:40:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:40:11,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:40:11,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615965977]
[2021-06-01 19:40:11,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615965977] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:40:11,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913460680]
[2021-06-01 19:40:11,543 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:40:11,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:40:11,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:40:11,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:40:11,584 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:40:12,147 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:40:12,148 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 51 treesize of output 31
[2021-06-01 19:40:12,149 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:12,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:40:12,157 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:12,157 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:40:12,309 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:40:12,310 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 38 treesize of output 18
[2021-06-01 19:40:12,311 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:12,314 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:40:12,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:12,314 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:40:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:40:12,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913460680] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:40:12,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:40:12,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 44
[2021-06-01 19:40:12,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094413360]
[2021-06-01 19:40:12,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states
[2021-06-01 19:40:12,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:40:12,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2021-06-01 19:40:12,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892
[2021-06-01 19:40:12,513 INFO L87 Difference]: Start difference. First operand 26860 states and 88598 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:22,245 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51
[2021-06-01 19:40:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:40:26,400 INFO L93 Difference]: Finished difference Result 130379 states and 438439 transitions.
[2021-06-01 19:40:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states.
[2021-06-01 19:40:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:40:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:40:26,681 INFO L225 Difference]: With dead ends: 130379
[2021-06-01 19:40:26,681 INFO L226 Difference]: Without dead ends: 129369
[2021-06-01 19:40:26,684 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31329 ImplicationChecksByTransitivity, 11092.7ms TimeCoverageRelationStatistics Valid=7681, Invalid=69325, Unknown=0, NotChecked=0, Total=77006
[2021-06-01 19:40:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129369 states.
[2021-06-01 19:40:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129369 to 27396.
[2021-06-01 19:40:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27396 states, 27395 states have (on average 3.301770396057675) internal successors, (90452), 27395 states have internal predecessors, (90452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:28,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27396 states to 27396 states and 90452 transitions.
[2021-06-01 19:40:28,215 INFO L78 Accepts]: Start accepts. Automaton has 27396 states and 90452 transitions. Word has length 54
[2021-06-01 19:40:28,215 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:40:28,215 INFO L482 AbstractCegarLoop]: Abstraction has 27396 states and 90452 transitions.
[2021-06-01 19:40:28,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 27396 states and 90452 transitions.
[2021-06-01 19:40:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:40:28,257 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:40:28,257 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:40:28,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:40:28,461 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:40:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:40:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -757192301, now seen corresponding path program 57 times
[2021-06-01 19:40:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:40:28,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702482912]
[2021-06-01 19:40:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:40:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:40:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:40:28,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:40:28,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702482912]
[2021-06-01 19:40:28,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702482912] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:40:28,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344272454]
[2021-06-01 19:40:28,863 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 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:40:29,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-01 19:40:29,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:40:29,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-06-01 19:40:29,072 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:40:29,592 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:40:29,593 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 49 treesize of output 29
[2021-06-01 19:40:29,594 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:29,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:40:29,601 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:29,601 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:31
[2021-06-01 19:40:29,750 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:40:29,750 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 38 treesize of output 18
[2021-06-01 19:40:29,751 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:29,754 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:40:29,755 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:29,755 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:40:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:40:29,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344272454] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:40:29,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:40:29,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 44
[2021-06-01 19:40:29,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925847052]
[2021-06-01 19:40:29,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states
[2021-06-01 19:40:29,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:40:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2021-06-01 19:40:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1702, Unknown=0, NotChecked=0, Total=1892
[2021-06-01 19:40:29,826 INFO L87 Difference]: Start difference. First operand 27396 states and 90452 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:30,446 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35
[2021-06-01 19:40:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:40:46,071 INFO L93 Difference]: Finished difference Result 144390 states and 485662 transitions.
[2021-06-01 19:40:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states.
[2021-06-01 19:40:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:40:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:40:46,388 INFO L225 Difference]: With dead ends: 144390
[2021-06-01 19:40:46,388 INFO L226 Difference]: Without dead ends: 142820
[2021-06-01 19:40:46,391 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42255 ImplicationChecksByTransitivity, 13090.7ms TimeCoverageRelationStatistics Valid=9725, Invalid=90447, Unknown=0, NotChecked=0, Total=100172
[2021-06-01 19:40:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142820 states.
[2021-06-01 19:40:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142820 to 27718.
[2021-06-01 19:40:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27718 states, 27717 states have (on average 3.300285023631706) internal successors, (91474), 27717 states have internal predecessors, (91474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27718 states to 27718 states and 91474 transitions.
[2021-06-01 19:40:47,998 INFO L78 Accepts]: Start accepts. Automaton has 27718 states and 91474 transitions. Word has length 54
[2021-06-01 19:40:47,998 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:40:47,998 INFO L482 AbstractCegarLoop]: Abstraction has 27718 states and 91474 transitions.
[2021-06-01 19:40:47,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 27718 states and 91474 transitions.
[2021-06-01 19:40:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:40:48,038 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:40:48,038 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:40:48,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:40:48,239 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:40:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:40:48,239 INFO L82 PathProgramCache]: Analyzing trace with hash -450654615, now seen corresponding path program 58 times
[2021-06-01 19:40:48,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:40:48,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953827936]
[2021-06-01 19:40:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:40:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:40:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:40:48,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:40:48,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953827936]
[2021-06-01 19:40:48,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953827936] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:40:48,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339847668]
[2021-06-01 19:40:48,562 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 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:40:48,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:40:48,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:40:48,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:40:48,734 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:40:49,306 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:40:49,306 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 51 treesize of output 31
[2021-06-01 19:40:49,307 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:49,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:40:49,315 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:49,316 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:40:49,434 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:40:49,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:40:49,435 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:49,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:40:49,439 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:40:49,439 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:40:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:40:49,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339847668] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:40:49,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:40:49,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 44
[2021-06-01 19:40:49,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350000302]
[2021-06-01 19:40:49,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states
[2021-06-01 19:40:49,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:40:49,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2021-06-01 19:40:49,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892
[2021-06-01 19:40:49,507 INFO L87 Difference]: Start difference. First operand 27718 states and 91474 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:40:50,140 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37
[2021-06-01 19:41:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:41:02,736 INFO L93 Difference]: Finished difference Result 126027 states and 422969 transitions.
[2021-06-01 19:41:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states.
[2021-06-01 19:41:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:41:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:41:03,223 INFO L225 Difference]: With dead ends: 126027
[2021-06-01 19:41:03,224 INFO L226 Difference]: Without dead ends: 125012
[2021-06-01 19:41:03,226 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29154 ImplicationChecksByTransitivity, 9919.8ms TimeCoverageRelationStatistics Valid=7000, Invalid=65092, Unknown=0, NotChecked=0, Total=72092
[2021-06-01 19:41:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125012 states.
[2021-06-01 19:41:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125012 to 27184.
[2021-06-01 19:41:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27184 states, 27183 states have (on average 3.2973181768016775) internal successors, (89631), 27183 states have internal predecessors, (89631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27184 states to 27184 states and 89631 transitions.
[2021-06-01 19:41:04,699 INFO L78 Accepts]: Start accepts. Automaton has 27184 states and 89631 transitions. Word has length 54
[2021-06-01 19:41:04,700 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:41:04,700 INFO L482 AbstractCegarLoop]: Abstraction has 27184 states and 89631 transitions.
[2021-06-01 19:41:04,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27184 states and 89631 transitions.
[2021-06-01 19:41:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:41:04,753 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:41:04,754 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:41:04,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167
[2021-06-01 19:41:04,967 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:41:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:41:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1368733625, now seen corresponding path program 59 times
[2021-06-01 19:41:04,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:41:04,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036423896]
[2021-06-01 19:41:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:41:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:41:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:41:05,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:41:05,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036423896]
[2021-06-01 19:41:05,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036423896] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:05,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744009082]
[2021-06-01 19:41:05,583 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:05,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-01 19:41:05,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:41:05,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-06-01 19:41:05,647 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:41:06,420 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:41:06,420 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:41:06,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:41:06,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:41:06,422 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:41:06,422 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:41:06,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:41:06,424 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:06,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:06,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:06,435 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:79, output treesize:38
[2021-06-01 19:41:06,553 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:06,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:41:06,554 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:06,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:06,557 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:06,558 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:41:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:41:06,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744009082] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:06,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:41:06,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 44
[2021-06-01 19:41:06,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798189683]
[2021-06-01 19:41:06,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states
[2021-06-01 19:41:06,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:41:06,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2021-06-01 19:41:06,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892
[2021-06-01 19:41:06,628 INFO L87 Difference]: Start difference. First operand 27184 states and 89631 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:41:23,007 INFO L93 Difference]: Finished difference Result 132631 states and 444905 transitions.
[2021-06-01 19:41:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states.
[2021-06-01 19:41:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:41:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:41:23,327 INFO L225 Difference]: With dead ends: 132631
[2021-06-01 19:41:23,327 INFO L226 Difference]: Without dead ends: 131761
[2021-06-01 19:41:23,330 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39131 ImplicationChecksByTransitivity, 12863.7ms TimeCoverageRelationStatistics Valid=9142, Invalid=84188, Unknown=0, NotChecked=0, Total=93330
[2021-06-01 19:41:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131761 states.
[2021-06-01 19:41:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131761 to 26238.
[2021-06-01 19:41:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26238 states, 26237 states have (on average 3.297976140564851) internal successors, (86529), 26237 states have internal predecessors, (86529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26238 states to 26238 states and 86529 transitions.
[2021-06-01 19:41:24,771 INFO L78 Accepts]: Start accepts. Automaton has 26238 states and 86529 transitions. Word has length 54
[2021-06-01 19:41:24,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:41:24,771 INFO L482 AbstractCegarLoop]: Abstraction has 26238 states and 86529 transitions.
[2021-06-01 19:41:24,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 26238 states and 86529 transitions.
[2021-06-01 19:41:24,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:41:24,809 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:41:24,809 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:41:25,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:25,010 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:41:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:41:25,010 INFO L82 PathProgramCache]: Analyzing trace with hash -702299817, now seen corresponding path program 60 times
[2021-06-01 19:41:25,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:41:25,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368218229]
[2021-06-01 19:41:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:41:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:41:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-06-01 19:41:25,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:41:25,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368218229]
[2021-06-01 19:41:25,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368218229] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:25,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415420028]
[2021-06-01 19:41:25,345 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 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:25,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-01 19:41:25,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:41:25,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:41:25,381 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:41:26,143 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:26,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:41:26,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:26,154 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:26,154 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:26,154 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:37
[2021-06-01 19:41:26,251 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:26,251 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 38 treesize of output 18
[2021-06-01 19:41:26,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:26,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:26,255 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:26,256 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:41:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:41:26,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415420028] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:26,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:41:26,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 44
[2021-06-01 19:41:26,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26483223]
[2021-06-01 19:41:26,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states
[2021-06-01 19:41:26,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:41:26,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2021-06-01 19:41:26,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892
[2021-06-01 19:41:26,326 INFO L87 Difference]: Start difference. First operand 26238 states and 86529 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:27,415 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2021-06-01 19:41:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:41:38,587 INFO L93 Difference]: Finished difference Result 108205 states and 362412 transitions.
[2021-06-01 19:41:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states.
[2021-06-01 19:41:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:41:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:41:39,000 INFO L225 Difference]: With dead ends: 108205
[2021-06-01 19:41:39,000 INFO L226 Difference]: Without dead ends: 106791
[2021-06-01 19:41:39,002 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26754 ImplicationChecksByTransitivity, 9852.7ms TimeCoverageRelationStatistics Valid=6587, Invalid=60235, Unknown=0, NotChecked=0, Total=66822
[2021-06-01 19:41:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106791 states.
[2021-06-01 19:41:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106791 to 23572.
[2021-06-01 19:41:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23572 states, 23571 states have (on average 3.3202240040728013) internal successors, (78261), 23571 states have internal predecessors, (78261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23572 states to 23572 states and 78261 transitions.
[2021-06-01 19:41:40,062 INFO L78 Accepts]: Start accepts. Automaton has 23572 states and 78261 transitions. Word has length 54
[2021-06-01 19:41:40,062 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:41:40,062 INFO L482 AbstractCegarLoop]: Abstraction has 23572 states and 78261 transitions.
[2021-06-01 19:41:40,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 23572 states and 78261 transitions.
[2021-06-01 19:41:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:41:40,092 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:41:40,092 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:41:40,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:40,293 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:41:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:41:40,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1274429673, now seen corresponding path program 61 times
[2021-06-01 19:41:40,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:41:40,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970610151]
[2021-06-01 19:41:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:41:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:41:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-06-01 19:41:40,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:41:40,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970610151]
[2021-06-01 19:41:40,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970610151] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:40,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917983560]
[2021-06-01 19:41:40,837 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 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:41:40,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:41:40,878 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:41:41,397 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:41,397 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 51 treesize of output 31
[2021-06-01 19:41:41,398 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:41,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:41,406 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:41,406 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:41:41,560 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:41,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:41:41,562 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:41,565 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:41,565 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:41,565 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:41:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:41:41,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917983560] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:41,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:41:41,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:41:41,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029386250]
[2021-06-01 19:41:41,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:41:41,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:41:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:41:41,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:41:41,653 INFO L87 Difference]: Start difference. First operand 23572 states and 78261 transitions. Second operand has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:42,224 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37
[2021-06-01 19:41:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:41:53,085 INFO L93 Difference]: Finished difference Result 101893 states and 342921 transitions.
[2021-06-01 19:41:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states.
[2021-06-01 19:41:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:41:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:41:53,311 INFO L225 Difference]: With dead ends: 101893
[2021-06-01 19:41:53,312 INFO L226 Difference]: Without dead ends: 101033
[2021-06-01 19:41:53,314 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23364 ImplicationChecksByTransitivity, 9048.0ms TimeCoverageRelationStatistics Valid=5536, Invalid=54734, Unknown=0, NotChecked=0, Total=60270
[2021-06-01 19:41:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101033 states.
[2021-06-01 19:41:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101033 to 23904.
[2021-06-01 19:41:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23904 states, 23903 states have (on average 3.316487470192026) internal successors, (79274), 23903 states have internal predecessors, (79274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23904 states to 23904 states and 79274 transitions.
[2021-06-01 19:41:54,531 INFO L78 Accepts]: Start accepts. Automaton has 23904 states and 79274 transitions. Word has length 54
[2021-06-01 19:41:54,531 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:41:54,531 INFO L482 AbstractCegarLoop]: Abstraction has 23904 states and 79274 transitions.
[2021-06-01 19:41:54,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:41:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23904 states and 79274 transitions.
[2021-06-01 19:41:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:41:54,563 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:41:54,563 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:41:54,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:54,764 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:41:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:41:54,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1901672493, now seen corresponding path program 62 times
[2021-06-01 19:41:54,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:41:54,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452947253]
[2021-06-01 19:41:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:41:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:41:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-06-01 19:41:55,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:41:55,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452947253]
[2021-06-01 19:41:55,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452947253] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:55,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772267460]
[2021-06-01 19:41:55,230 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:41:55,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:41:55,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:41:55,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:41:55,282 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:41:55,911 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:55,911 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 51 treesize of output 31
[2021-06-01 19:41:55,912 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:55,921 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:55,922 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:55,922 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:41:56,058 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:41:56,058 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 38 treesize of output 18
[2021-06-01 19:41:56,059 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:56,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:41:56,063 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:41:56,063 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:41:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:41:56,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772267460] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:41:56,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:41:56,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:41:56,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082738077]
[2021-06-01 19:41:56,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:41:56,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:41:56,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:41:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:41:56,245 INFO L87 Difference]: Start difference. First operand 23904 states and 79274 transitions. Second operand has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:42:07,734 INFO L93 Difference]: Finished difference Result 91780 states and 309030 transitions.
[2021-06-01 19:42:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states.
[2021-06-01 19:42:07,734 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:42:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:42:07,917 INFO L225 Difference]: With dead ends: 91780
[2021-06-01 19:42:07,917 INFO L226 Difference]: Without dead ends: 90930
[2021-06-01 19:42:07,919 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22028 ImplicationChecksByTransitivity, 9532.7ms TimeCoverageRelationStatistics Valid=5784, Invalid=51576, Unknown=0, NotChecked=0, Total=57360
[2021-06-01 19:42:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90930 states.
[2021-06-01 19:42:08,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90930 to 23990.
[2021-06-01 19:42:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23990 states, 23989 states have (on average 3.311601150527325) internal successors, (79442), 23989 states have internal predecessors, (79442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23990 states to 23990 states and 79442 transitions.
[2021-06-01 19:42:08,833 INFO L78 Accepts]: Start accepts. Automaton has 23990 states and 79442 transitions. Word has length 54
[2021-06-01 19:42:08,833 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:42:08,833 INFO L482 AbstractCegarLoop]: Abstraction has 23990 states and 79442 transitions.
[2021-06-01 19:42:08,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 23990 states and 79442 transitions.
[2021-06-01 19:42:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:42:08,864 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:42:08,864 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:42:09,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179
[2021-06-01 19:42:09,064 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:42:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:42:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1703119415, now seen corresponding path program 63 times
[2021-06-01 19:42:09,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:42:09,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877202082]
[2021-06-01 19:42:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:42:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:42:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-06-01 19:42:09,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:42:09,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877202082]
[2021-06-01 19:42:09,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877202082] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:09,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818923562]
[2021-06-01 19:42:09,404 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:42:09,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-06-01 19:42:09,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:42:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-06-01 19:42:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:42:10,200 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:42:10,200 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 51 treesize of output 31
[2021-06-01 19:42:10,201 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:10,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:10,209 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:10,209 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:37
[2021-06-01 19:42:10,306 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:10,307 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:10,307 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:10,308 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:10,308 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:42:10,309 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:10,310 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:10,310 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:42:10,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:42:10,311 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:10,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:10,318 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:10,318 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:10
[2021-06-01 19:42:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:42:10,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818923562] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:10,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:42:10,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 43
[2021-06-01 19:42:10,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20957484]
[2021-06-01 19:42:10,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states
[2021-06-01 19:42:10,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:42:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2021-06-01 19:42:10,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1637, Unknown=0, NotChecked=0, Total=1806
[2021-06-01 19:42:10,392 INFO L87 Difference]: Start difference. First operand 23990 states and 79442 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:42:23,626 INFO L93 Difference]: Finished difference Result 83749 states and 282555 transitions.
[2021-06-01 19:42:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states.
[2021-06-01 19:42:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:42:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:42:23,791 INFO L225 Difference]: With dead ends: 83749
[2021-06-01 19:42:23,791 INFO L226 Difference]: Without dead ends: 79687
[2021-06-01 19:42:23,793 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22824 ImplicationChecksByTransitivity, 10346.6ms TimeCoverageRelationStatistics Valid=5842, Invalid=52480, Unknown=0, NotChecked=0, Total=58322
[2021-06-01 19:42:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79687 states.
[2021-06-01 19:42:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79687 to 24522.
[2021-06-01 19:42:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24522 states, 24521 states have (on average 3.308837323110803) internal successors, (81136), 24521 states have internal predecessors, (81136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24522 states to 24522 states and 81136 transitions.
[2021-06-01 19:42:24,641 INFO L78 Accepts]: Start accepts. Automaton has 24522 states and 81136 transitions. Word has length 54
[2021-06-01 19:42:24,641 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:42:24,641 INFO L482 AbstractCegarLoop]: Abstraction has 24522 states and 81136 transitions.
[2021-06-01 19:42:24,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 43 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 24522 states and 81136 transitions.
[2021-06-01 19:42:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:42:24,671 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:42:24,672 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:42:24,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:42:24,872 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:42:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:42:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1112434429, now seen corresponding path program 64 times
[2021-06-01 19:42:24,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:42:24,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643104404]
[2021-06-01 19:42:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:42:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:42:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:42:25,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:42:25,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643104404]
[2021-06-01 19:42:25,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643104404] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:25,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750229085]
[2021-06-01 19:42:25,211 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:42:25,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:42:25,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:42:25,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:42:25,245 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:42:25,765 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:42:25,765 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 51 treesize of output 31
[2021-06-01 19:42:25,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:25,773 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:25,774 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:25,774 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:33
[2021-06-01 19:42:25,921 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:42:25,921 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 38 treesize of output 18
[2021-06-01 19:42:25,922 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:25,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:25,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:25,926 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:42:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:42:25,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750229085] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:25,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:42:25,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:42:25,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821886289]
[2021-06-01 19:42:25,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:42:25,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:42:25,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:42:25,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:42:25,996 INFO L87 Difference]: Start difference. First operand 24522 states and 81136 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:31,156 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42
[2021-06-01 19:42:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:42:37,447 INFO L93 Difference]: Finished difference Result 94684 states and 318256 transitions.
[2021-06-01 19:42:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states.
[2021-06-01 19:42:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:42:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:42:37,641 INFO L225 Difference]: With dead ends: 94684
[2021-06-01 19:42:37,641 INFO L226 Difference]: Without dead ends: 93786
[2021-06-01 19:42:37,644 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22145 ImplicationChecksByTransitivity, 8639.3ms TimeCoverageRelationStatistics Valid=5306, Invalid=51576, Unknown=0, NotChecked=0, Total=56882
[2021-06-01 19:42:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93786 states.
[2021-06-01 19:42:38,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93786 to 25118.
[2021-06-01 19:42:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25118 states, 25117 states have (on average 3.3056495600589244) internal successors, (83028), 25117 states have internal predecessors, (83028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25118 states to 25118 states and 83028 transitions.
[2021-06-01 19:42:38,692 INFO L78 Accepts]: Start accepts. Automaton has 25118 states and 83028 transitions. Word has length 54
[2021-06-01 19:42:38,693 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:42:38,693 INFO L482 AbstractCegarLoop]: Abstraction has 25118 states and 83028 transitions.
[2021-06-01 19:42:38,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 25118 states and 83028 transitions.
[2021-06-01 19:42:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:42:38,725 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:42:38,725 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:42:38,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:42:38,929 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:42:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:42:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 605110623, now seen corresponding path program 65 times
[2021-06-01 19:42:38,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:42:38,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775061373]
[2021-06-01 19:42:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:42:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:42:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:42:39,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:42:39,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775061373]
[2021-06-01 19:42:39,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775061373] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:39,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986789422]
[2021-06-01 19:42:39,277 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 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:42:39,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-06-01 19:42:39,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:42:39,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-06-01 19:42:39,324 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:42:39,879 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:39,881 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:42:39,881 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:42:39,882 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:42:39,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29
[2021-06-01 19:42:39,883 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:39,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:39,894 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:39,894 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:72, output treesize:31
[2021-06-01 19:42:40,045 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:42:40,045 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 38 treesize of output 18
[2021-06-01 19:42:40,046 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:40,050 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:40,050 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:40,050 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:42:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:42:40,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986789422] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:40,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:42:40,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:42:40,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284348751]
[2021-06-01 19:42:40,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:42:40,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:42:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:42:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:42:40,122 INFO L87 Difference]: Start difference. First operand 25118 states and 83028 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:42:53,737 INFO L93 Difference]: Finished difference Result 115635 states and 388960 transitions.
[2021-06-01 19:42:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states.
[2021-06-01 19:42:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:42:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:42:53,996 INFO L225 Difference]: With dead ends: 115635
[2021-06-01 19:42:53,997 INFO L226 Difference]: Without dead ends: 114631
[2021-06-01 19:42:54,000 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29308 ImplicationChecksByTransitivity, 10993.2ms TimeCoverageRelationStatistics Valid=7087, Invalid=66083, Unknown=0, NotChecked=0, Total=73170
[2021-06-01 19:42:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114631 states.
[2021-06-01 19:42:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114631 to 25490.
[2021-06-01 19:42:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25490 states, 25489 states have (on average 3.3076621287614265) internal successors, (84309), 25489 states have internal predecessors, (84309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25490 states to 25490 states and 84309 transitions.
[2021-06-01 19:42:55,142 INFO L78 Accepts]: Start accepts. Automaton has 25490 states and 84309 transitions. Word has length 54
[2021-06-01 19:42:55,142 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:42:55,142 INFO L482 AbstractCegarLoop]: Abstraction has 25490 states and 84309 transitions.
[2021-06-01 19:42:55,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 25490 states and 84309 transitions.
[2021-06-01 19:42:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:42:55,173 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:42:55,173 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:42:55,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188
[2021-06-01 19:42:55,374 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:42:55,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:42:55,374 INFO L82 PathProgramCache]: Analyzing trace with hash -312968387, now seen corresponding path program 66 times
[2021-06-01 19:42:55,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:42:55,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954642365]
[2021-06-01 19:42:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:42:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:42:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:42:55,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:42:55,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954642365]
[2021-06-01 19:42:55,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954642365] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:55,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003953373]
[2021-06-01 19:42:55,724 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 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:42:55,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2021-06-01 19:42:55,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:42:55,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:42:55,760 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:42:56,270 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:42:56,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 29
[2021-06-01 19:42:56,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:56,278 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:56,278 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:56,278 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:31
[2021-06-01 19:42:56,425 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:42:56,425 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 38 treesize of output 18
[2021-06-01 19:42:56,426 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:56,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:42:56,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:42:56,430 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:42:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:42:56,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003953373] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:42:56,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:42:56,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:42:56,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528009109]
[2021-06-01 19:42:56,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:42:56,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:42:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:42:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:42:56,498 INFO L87 Difference]: Start difference. First operand 25490 states and 84309 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:42:57,165 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23
[2021-06-01 19:43:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:43:12,641 INFO L93 Difference]: Finished difference Result 126947 states and 426952 transitions.
[2021-06-01 19:43:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states.
[2021-06-01 19:43:12,641 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:43:12,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:43:12,932 INFO L225 Difference]: With dead ends: 126947
[2021-06-01 19:43:12,932 INFO L226 Difference]: Without dead ends: 125608
[2021-06-01 19:43:12,936 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39699 ImplicationChecksByTransitivity, 13094.4ms TimeCoverageRelationStatistics Valid=8842, Invalid=86948, Unknown=0, NotChecked=0, Total=95790
[2021-06-01 19:43:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125608 states.
[2021-06-01 19:43:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125608 to 25380.
[2021-06-01 19:43:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25380 states, 25379 states have (on average 3.307064896174002) internal successors, (83930), 25379 states have internal predecessors, (83930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25380 states to 25380 states and 83930 transitions.
[2021-06-01 19:43:14,469 INFO L78 Accepts]: Start accepts. Automaton has 25380 states and 83930 transitions. Word has length 54
[2021-06-01 19:43:14,469 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:43:14,469 INFO L482 AbstractCegarLoop]: Abstraction has 25380 states and 83930 transitions.
[2021-06-01 19:43:14,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 25380 states and 83930 transitions.
[2021-06-01 19:43:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:43:14,503 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:43:14,503 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:43:14,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:43:14,703 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:43:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:43:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash -6430701, now seen corresponding path program 67 times
[2021-06-01 19:43:14,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:43:14,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837979247]
[2021-06-01 19:43:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:43:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:43:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:43:15,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:43:15,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837979247]
[2021-06-01 19:43:15,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837979247] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:43:15,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424875448]
[2021-06-01 19:43:15,096 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:43:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:43:15,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:43:15,129 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:43:15,696 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:43:15,696 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 51 treesize of output 31
[2021-06-01 19:43:15,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:15,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:43:15,706 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:15,706 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:43:15,949 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:43:15,950 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 38 treesize of output 18
[2021-06-01 19:43:15,951 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:15,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:43:15,955 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:15,956 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:43:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:43:16,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424875448] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:43:16,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:43:16,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:43:16,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607531088]
[2021-06-01 19:43:16,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:43:16,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:43:16,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:43:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:43:16,027 INFO L87 Difference]: Start difference. First operand 25380 states and 83930 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:43:29,571 INFO L93 Difference]: Finished difference Result 116033 states and 390273 transitions.
[2021-06-01 19:43:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states.
[2021-06-01 19:43:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:43:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:43:29,826 INFO L225 Difference]: With dead ends: 116033
[2021-06-01 19:43:29,826 INFO L226 Difference]: Without dead ends: 115155
[2021-06-01 19:43:29,829 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27626 ImplicationChecksByTransitivity, 10261.0ms TimeCoverageRelationStatistics Valid=6490, Invalid=62942, Unknown=0, NotChecked=0, Total=69432
[2021-06-01 19:43:29,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115155 states.
[2021-06-01 19:43:30,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115155 to 25374.
[2021-06-01 19:43:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25374 states, 25373 states have (on average 3.307019272454972) internal successors, (83909), 25373 states have internal predecessors, (83909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25374 states to 25374 states and 83909 transitions.
[2021-06-01 19:43:31,004 INFO L78 Accepts]: Start accepts. Automaton has 25374 states and 83909 transitions. Word has length 54
[2021-06-01 19:43:31,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:43:31,004 INFO L482 AbstractCegarLoop]: Abstraction has 25374 states and 83909 transitions.
[2021-06-01 19:43:31,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 25374 states and 83909 transitions.
[2021-06-01 19:43:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:43:31,278 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:43:31,279 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:43:31,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:43:31,493 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:43:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:43:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash -924509711, now seen corresponding path program 68 times
[2021-06-01 19:43:31,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:43:31,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561455754]
[2021-06-01 19:43:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:43:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:43:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:43:31,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:43:31,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561455754]
[2021-06-01 19:43:31,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561455754] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:43:31,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572856616]
[2021-06-01 19:43:31,864 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 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:43:31,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-06-01 19:43:31,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:43:31,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:43:31,896 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:43:32,452 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:43:32,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:43:32,454 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:32,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:43:32,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:32,462 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:43:32,579 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:43:32,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:43:32,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:32,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:43:32,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:32,585 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:43:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:43:32,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572856616] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:43:32,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:43:32,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:43:32,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553589469]
[2021-06-01 19:43:32,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:43:32,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:43:32,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:43:32,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:43:32,659 INFO L87 Difference]: Start difference. First operand 25374 states and 83909 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:43:48,252 INFO L93 Difference]: Finished difference Result 120682 states and 405497 transitions.
[2021-06-01 19:43:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states.
[2021-06-01 19:43:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:43:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:43:48,524 INFO L225 Difference]: With dead ends: 120682
[2021-06-01 19:43:48,524 INFO L226 Difference]: Without dead ends: 119807
[2021-06-01 19:43:48,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37756 ImplicationChecksByTransitivity, 12379.6ms TimeCoverageRelationStatistics Valid=8417, Invalid=83089, Unknown=0, NotChecked=0, Total=91506
[2021-06-01 19:43:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119807 states.
[2021-06-01 19:43:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119807 to 25158.
[2021-06-01 19:43:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25158 states, 25157 states have (on average 3.305879079381484) internal successors, (83166), 25157 states have internal predecessors, (83166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25158 states to 25158 states and 83166 transitions.
[2021-06-01 19:43:49,541 INFO L78 Accepts]: Start accepts. Automaton has 25158 states and 83166 transitions. Word has length 54
[2021-06-01 19:43:49,541 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:43:49,541 INFO L482 AbstractCegarLoop]: Abstraction has 25158 states and 83166 transitions.
[2021-06-01 19:43:49,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:43:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 25158 states and 83166 transitions.
[2021-06-01 19:43:49,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:43:49,573 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:43:49,573 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:43:49,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:43:49,774 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:43:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:43:49,774 INFO L82 PathProgramCache]: Analyzing trace with hash -258075903, now seen corresponding path program 69 times
[2021-06-01 19:43:49,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:43:49,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694161242]
[2021-06-01 19:43:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:43:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:43:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-06-01 19:43:50,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:43:50,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694161242]
[2021-06-01 19:43:50,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694161242] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:43:50,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138879421]
[2021-06-01 19:43:50,562 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 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:43:50,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2021-06-01 19:43:50,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:43:50,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-06-01 19:43:50,604 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:43:51,214 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:43:51,215 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 51 treesize of output 31
[2021-06-01 19:43:51,216 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:51,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:43:51,223 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:51,223 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:37
[2021-06-01 19:43:51,301 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:43:51,302 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 38 treesize of output 18
[2021-06-01 19:43:51,303 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:51,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:43:51,306 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:43:51,306 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:43:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:43:51,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138879421] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:43:51,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:43:51,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:43:51,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519335579]
[2021-06-01 19:43:51,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:43:51,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:43:51,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:43:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:43:51,376 INFO L87 Difference]: Start difference. First operand 25158 states and 83166 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:44:03,904 INFO L93 Difference]: Finished difference Result 95640 states and 320302 transitions.
[2021-06-01 19:44:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states.
[2021-06-01 19:44:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:44:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:44:04,086 INFO L225 Difference]: With dead ends: 95640
[2021-06-01 19:44:04,086 INFO L226 Difference]: Without dead ends: 94430
[2021-06-01 19:44:04,089 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26277 ImplicationChecksByTransitivity, 10001.5ms TimeCoverageRelationStatistics Valid=6263, Invalid=60043, Unknown=0, NotChecked=0, Total=66306
[2021-06-01 19:44:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94430 states.
[2021-06-01 19:44:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94430 to 25134.
[2021-06-01 19:44:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25134 states, 25133 states have (on average 3.3059324394222735) internal successors, (83088), 25133 states have internal predecessors, (83088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25134 states to 25134 states and 83088 transitions.
[2021-06-01 19:44:05,083 INFO L78 Accepts]: Start accepts. Automaton has 25134 states and 83088 transitions. Word has length 54
[2021-06-01 19:44:05,083 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:44:05,083 INFO L482 AbstractCegarLoop]: Abstraction has 25134 states and 83088 transitions.
[2021-06-01 19:44:05,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 25134 states and 83088 transitions.
[2021-06-01 19:44:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:44:05,114 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:44:05,114 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:44:05,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200
[2021-06-01 19:44:05,315 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:44:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:44:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1981468115, now seen corresponding path program 70 times
[2021-06-01 19:44:05,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:44:05,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538235207]
[2021-06-01 19:44:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:44:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:44:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-06-01 19:44:05,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:44:05,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538235207]
[2021-06-01 19:44:05,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538235207] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:05,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192832400]
[2021-06-01 19:44:05,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:44:05,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-06-01 19:44:05,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:44:05,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:44:05,748 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:44:06,232 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2021-06-01 19:44:06,474 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:44:06,474 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 51 treesize of output 31
[2021-06-01 19:44:06,475 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:06,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:06,482 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:06,482 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:37
[2021-06-01 19:44:06,557 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:44:06,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:44:06,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:06,562 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:06,562 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:06,562 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:44:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:44:06,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192832400] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:06,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:44:06,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45
[2021-06-01 19:44:06,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580562937]
[2021-06-01 19:44:06,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 45 states
[2021-06-01 19:44:06,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:44:06,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2021-06-01 19:44:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980
[2021-06-01 19:44:06,630 INFO L87 Difference]: Start difference. First operand 25134 states and 83088 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:44:17,223 INFO L93 Difference]: Finished difference Result 86306 states and 290216 transitions.
[2021-06-01 19:44:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states.
[2021-06-01 19:44:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:44:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:44:17,395 INFO L225 Difference]: With dead ends: 86306
[2021-06-01 19:44:17,395 INFO L226 Difference]: Without dead ends: 82314
[2021-06-01 19:44:17,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19453 ImplicationChecksByTransitivity, 8454.3ms TimeCoverageRelationStatistics Valid=5086, Invalid=44866, Unknown=0, NotChecked=0, Total=49952
[2021-06-01 19:44:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82314 states.
[2021-06-01 19:44:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82314 to 25752.
[2021-06-01 19:44:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25752 states, 25751 states have (on average 3.303522193312881) internal successors, (85069), 25751 states have internal predecessors, (85069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25752 states to 25752 states and 85069 transitions.
[2021-06-01 19:44:18,158 INFO L78 Accepts]: Start accepts. Automaton has 25752 states and 85069 transitions. Word has length 54
[2021-06-01 19:44:18,158 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:44:18,158 INFO L482 AbstractCegarLoop]: Abstraction has 25752 states and 85069 transitions.
[2021-06-01 19:44:18,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 25752 states and 85069 transitions.
[2021-06-01 19:44:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:44:18,195 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:44:18,195 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:44:18,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203
[2021-06-01 19:44:18,395 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:44:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:44:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1676107171, now seen corresponding path program 71 times
[2021-06-01 19:44:18,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:44:18,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507715926]
[2021-06-01 19:44:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:44:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:44:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-06-01 19:44:18,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:44:18,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507715926]
[2021-06-01 19:44:18,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507715926] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:18,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371601560]
[2021-06-01 19:44:18,857 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 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:44:18,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-06-01 19:44:18,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:44:18,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 48 conjunts are in the unsatisfiable core
[2021-06-01 19:44:18,892 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:44:19,490 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:44:19,491 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 51 treesize of output 31
[2021-06-01 19:44:19,492 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:19,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:19,499 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:19,499 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:37
[2021-06-01 19:44:19,579 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:44:19,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:44:19,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:19,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:19,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:19,584 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:44:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:44:19,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371601560] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:19,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:44:19,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:44:19,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599351466]
[2021-06-01 19:44:19,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:44:19,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:44:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:44:19,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:44:19,664 INFO L87 Difference]: Start difference. First operand 25752 states and 85069 transitions. Second operand has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:44:31,541 INFO L93 Difference]: Finished difference Result 97493 states and 327125 transitions.
[2021-06-01 19:44:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states.
[2021-06-01 19:44:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:44:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:44:31,736 INFO L225 Difference]: With dead ends: 97493
[2021-06-01 19:44:31,736 INFO L226 Difference]: Without dead ends: 93309
[2021-06-01 19:44:31,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27532 ImplicationChecksByTransitivity, 9954.4ms TimeCoverageRelationStatistics Valid=6915, Invalid=60425, Unknown=0, NotChecked=0, Total=67340
[2021-06-01 19:44:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93309 states.
[2021-06-01 19:44:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93309 to 25720.
[2021-06-01 19:44:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25720 states, 25719 states have (on average 3.3054551110074266) internal successors, (85013), 25719 states have internal predecessors, (85013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25720 states to 25720 states and 85013 transitions.
[2021-06-01 19:44:32,616 INFO L78 Accepts]: Start accepts. Automaton has 25720 states and 85013 transitions. Word has length 54
[2021-06-01 19:44:32,616 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:44:32,617 INFO L482 AbstractCegarLoop]: Abstraction has 25720 states and 85013 transitions.
[2021-06-01 19:44:32,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:32,617 INFO L276 IsEmpty]: Start isEmpty. Operand 25720 states and 85013 transitions.
[2021-06-01 19:44:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:44:32,655 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:44:32,655 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:44:32,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206
[2021-06-01 19:44:32,855 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:44:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:44:32,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1736363597, now seen corresponding path program 72 times
[2021-06-01 19:44:32,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:44:32,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401172269]
[2021-06-01 19:44:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:44:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:44:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-06-01 19:44:33,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:44:33,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401172269]
[2021-06-01 19:44:33,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401172269] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:33,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472666908]
[2021-06-01 19:44:33,258 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 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:44:33,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-06-01 19:44:33,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-06-01 19:44:33,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-06-01 19:44:33,294 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:44:34,073 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:44:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31
[2021-06-01 19:44:34,077 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:34,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:34,089 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:34,089 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:83, output treesize:42
[2021-06-01 19:44:34,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,195 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-06-01 19:44:34,195 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-06-01 19:44:34,196 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18
[2021-06-01 19:44:34,197 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:34,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:34,203 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:34,203 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:10
[2021-06-01 19:44:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:44:34,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472666908] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:34,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:44:34,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 46
[2021-06-01 19:44:34,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207076534]
[2021-06-01 19:44:34,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states
[2021-06-01 19:44:34,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:44:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2021-06-01 19:44:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1885, Unknown=0, NotChecked=0, Total=2070
[2021-06-01 19:44:34,278 INFO L87 Difference]: Start difference. First operand 25720 states and 85013 transitions. Second operand has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-06-01 19:44:45,654 INFO L93 Difference]: Finished difference Result 111560 states and 377221 transitions.
[2021-06-01 19:44:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states.
[2021-06-01 19:44:45,654 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54
[2021-06-01 19:44:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-06-01 19:44:45,881 INFO L225 Difference]: With dead ends: 111560
[2021-06-01 19:44:45,881 INFO L226 Difference]: Without dead ends: 106928
[2021-06-01 19:44:45,884 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23672 ImplicationChecksByTransitivity, 9168.5ms TimeCoverageRelationStatistics Valid=6280, Invalid=53500, Unknown=0, NotChecked=0, Total=59780
[2021-06-01 19:44:46,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106928 states.
[2021-06-01 19:44:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106928 to 28580.
[2021-06-01 19:44:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28579 states have (on average 3.298120997935547) internal successors, (94257), 28579 states have internal predecessors, (94257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 94257 transitions.
[2021-06-01 19:44:47,198 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 94257 transitions. Word has length 54
[2021-06-01 19:44:47,198 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-06-01 19:44:47,198 INFO L482 AbstractCegarLoop]: Abstraction has 28580 states and 94257 transitions.
[2021-06-01 19:44:47,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-06-01 19:44:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 94257 transitions.
[2021-06-01 19:44:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2021-06-01 19:44:47,241 INFO L546 BasicCegarLoop]: Found error trace
[2021-06-01 19:44:47,241 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-06-01 19:44:47,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:44:47,441 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-06-01 19:44:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-06-01 19:44:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1006256589, now seen corresponding path program 73 times
[2021-06-01 19:44:47,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-01 19:44:47,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877943169]
[2021-06-01 19:44:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-01 19:44:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:44:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-06-01 19:44:47,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-01 19:44:47,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877943169]
[2021-06-01 19:44:47,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877943169] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:47,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649423147]
[2021-06-01 19:44:47,862 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 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:44:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-01 19:44:47,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-06-01 19:44:47,895 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-06-01 19:44:48,732 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:44:48,732 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 51 treesize of output 31
[2021-06-01 19:44:48,734 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:48,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:48,743 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:48,743 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:38
[2021-06-01 19:44:48,868 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-06-01 19:44:48,868 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 38 treesize of output 18
[2021-06-01 19:44:48,869 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:48,872 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-06-01 19:44:48,873 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2021-06-01 19:44:48,873 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:10
[2021-06-01 19:44:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-01 19:44:48,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649423147] provided 0 perfect and 1 imperfect interpolant sequences
[2021-06-01 19:44:48,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-06-01 19:44:48,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 47
[2021-06-01 19:44:48,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197324999]
[2021-06-01 19:44:48,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 47 states
[2021-06-01 19:44:48,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-01 19:44:48,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2021-06-01 19:44:48,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162
[2021-06-01 19:44:48,950 INFO L87 Difference]: Start difference. First operand 28580 states and 94257 transitions. Second operand has 47 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 47 states have internal predecessors, (92), 0 states have call successors, (0), 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...
[2021-06-01 19:44:57,569 WARN L222 SmtUtils]: Removed 6 from assertion stack
[2021-06-01 19:44:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states.
[2021-06-01 19:44:57,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-06-01 19:44:57,769 WARN L547 AbstractCegarLoop]: Verification canceled
[2021-06-01 19:44:57,771 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2021-06-01 19:44:57,772 WARN L196 ceAbstractionStarter]: Timeout
[2021-06-01 19:44:57,773 INFO L202 PluginConnector]: Adding new model prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 07:44:57 BasicIcfg
[2021-06-01 19:44:57,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-06-01 19:44:57,773 INFO L168 Benchmark]: Toolchain (without parser) took 718813.96 ms. Allocated memory was 329.3 MB in the beginning and 8.9 GB in the end (delta: 8.5 GB). Free memory was 308.1 MB in the beginning and 5.1 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.8 GB. Max. memory is 16.0 GB.
[2021-06-01 19:44:57,773 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 329.3 MB. Free memory was 309.3 MB in the beginning and 309.2 MB in the end (delta: 85.8 kB). There was no memory consumed. Max. memory is 16.0 GB.
[2021-06-01 19:44:57,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.92 ms. Allocated memory is still 329.3 MB. Free memory was 308.0 MB in the beginning and 306.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB.
[2021-06-01 19:44:57,773 INFO L168 Benchmark]: Boogie Preprocessor took 31.68 ms. Allocated memory is still 329.3 MB. Free memory was 306.5 MB in the beginning and 305.5 MB in the end (delta: 989.3 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB.
[2021-06-01 19:44:57,773 INFO L168 Benchmark]: RCFGBuilder took 357.64 ms. Allocated memory is still 329.3 MB. Free memory was 305.4 MB in the beginning and 290.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB.
[2021-06-01 19:44:57,773 INFO L168 Benchmark]: TraceAbstraction took 718387.39 ms. Allocated memory was 329.3 MB in the beginning and 8.9 GB in the end (delta: 8.5 GB). Free memory was 289.8 MB in the beginning and 5.1 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.7 GB. Max. memory is 16.0 GB.
[2021-06-01 19:44:57,773 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 0.13 ms. Allocated memory is still 329.3 MB. Free memory was 309.3 MB in the beginning and 309.2 MB in the end (delta: 85.8 kB). There was no memory consumed. Max. memory is 16.0 GB.
* Boogie Procedure Inliner took 30.92 ms. Allocated memory is still 329.3 MB. Free memory was 308.0 MB in the beginning and 306.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB.
* Boogie Preprocessor took 31.68 ms. Allocated memory is still 329.3 MB. Free memory was 306.5 MB in the beginning and 305.5 MB in the end (delta: 989.3 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB.
* RCFGBuilder took 357.64 ms. Allocated memory is still 329.3 MB. Free memory was 305.4 MB in the beginning and 290.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB.
* TraceAbstraction took 718387.39 ms. Allocated memory was 329.3 MB in the beginning and 8.9 GB in the end (delta: 8.5 GB). Free memory was 289.8 MB in the beginning and 5.1 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.7 GB. Max. memory is 16.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (28580states) and FLOYD_HOARE automaton (currently 164 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 34 for 25ms..
- StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances
CFG has 9 procedures, 61 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 718287.3ms, OverallIterations: 77, TraceHistogramMax: 3, EmptinessCheckTime: 2034.9ms, AutomataDifference: 577147.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 79.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7595 SDtfs, 91257 SDslu, 143513 SDs, 0 SdLazy, 297595 SolverSat, 27274 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123095.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15567 GetRequests, 2407 SyntacticMatches, 151 SemanticMatches, 13008 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108329 ImplicationChecksByTransitivity, 444487.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28580occurred in iteration=76, InterpolantAutomatonStates: 10507, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47613.8ms AutomataMinimizationTime, 76 MinimizatonAttempts, 3619668 StatesRemovedByMinimization, 72 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 572.0ms SsaConstructionTime, 1883.8ms SatisfiabilityAnalysisTime, 71907.0ms InterpolantComputationTime, 7222 NumberOfCodeBlocks, 7222 NumberOfCodeBlocksAsserted, 286 NumberOfCheckSat, 7072 ConstructedInterpolants, 52 QuantifiedInterpolants, 109116 SizeOfPredicates, 770 NumberOfNonLiveVariables, 9728 ConjunctsInSsa, 2528 ConjunctsInUnsatCore, 150 InterpolantComputations, 6 PerfectInterpolantSequences, 1023/3971 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