/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 19:54:44,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 19:54:44,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 19:54:44,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 19:54:44,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 19:54:44,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 19:54:44,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 19:54:44,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 19:54:44,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 19:54:44,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 19:54:44,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 19:54:44,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 19:54:44,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 19:54:44,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 19:54:44,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 19:54:44,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 19:54:44,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 19:54:44,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 19:54:44,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 19:54:44,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 19:54:44,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 19:54:44,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 19:54:44,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 19:54:44,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 19:54:44,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 19:54:44,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 19:54:44,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 19:54:44,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 19:54:44,618 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-SemanticLbe-MCR.epf [2020-01-16 19:54:44,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 19:54:44,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 19:54:44,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 19:54:44,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 19:54:44,634 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 19:54:44,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 19:54:44,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 19:54:44,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 19:54:44,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 19:54:44,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 19:54:44,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 19:54:44,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 19:54:44,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 19:54:44,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 19:54:44,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 19:54:44,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 19:54:44,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 19:54:44,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 19:54:44,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 19:54:44,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 19:54:44,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 19:54:44,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 19:54:44,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 19:54:44,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 19:54:44,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 19:54:44,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 19:54:44,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 19:54:44,639 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 19:54:44,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 19:54:44,640 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 19:54:44,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 19:54:44,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 19:54:44,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 19:54:45,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 19:54:45,003 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 19:54:45,004 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 19:54:45,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-01-16 19:54:45,005 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-01-16 19:54:45,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 19:54:45,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 19:54:45,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 19:54:45,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 19:54:45,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 19:54:45,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 19:54:45,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 19:54:45,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 19:54:45,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 19:54:45,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/1) ... [2020-01-16 19:54:45,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 19:54:45,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 19:54:45,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 19:54:45,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 19:54:45,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (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 [2020-01-16 19:54:45,186 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 19:54:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 19:54:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 19:54:45,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 19:54:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 19:54:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 19:54:45,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 19:54:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 19:54:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 19:54:45,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 19:54:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 19:54:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 19:54:45,191 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 19:54:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 19:54:45,191 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 19:54:45,191 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 19:54:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 19:54:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 19:54:45,192 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 19:54:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 19:54:45,192 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 19:54:45,193 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 19:54:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 19:54:45,193 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 19:54:45,195 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 19:54:45,463 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 19:54:45,464 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 19:54:45,465 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 07:54:45 BoogieIcfgContainer [2020-01-16 19:54:45,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 19:54:45,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 19:54:45,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 19:54:45,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 19:54:45,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 07:54:45" (1/2) ... [2020-01-16 19:54:45,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625630b5 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 07:54:45, skipping insertion in model container [2020-01-16 19:54:45,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 07:54:45" (2/2) ... [2020-01-16 19:54:45,473 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-01-16 19:54:45,492 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 19:54:45,493 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 19:54:45,500 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 19:54:45,501 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 19:54:45,733 INFO L250 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-01-16 19:54:45,768 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 19:54:45,769 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 19:54:45,769 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 19:54:45,769 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 19:54:45,769 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 19:54:45,769 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 19:54:45,770 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 19:54:45,770 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 19:54:45,785 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 80 transitions [2020-01-16 19:54:45,787 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions [2020-01-16 19:54:46,039 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2020-01-16 19:54:46,055 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-01-16 19:54:46,077 INFO L76 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1550 event pairs. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-01-16 19:54:46,087 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions [2020-01-16 19:54:46,201 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2020-01-16 19:54:46,201 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-01-16 19:54:46,206 INFO L76 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1550 event pairs. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-01-16 19:54:46,220 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-01-16 19:54:46,221 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 19:54:46,386 INFO L206 etLargeBlockEncoding]: Checked pairs total: 357 [2020-01-16 19:54:46,386 INFO L214 etLargeBlockEncoding]: Total number of compositions: 8 [2020-01-16 19:54:46,390 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 72 transitions [2020-01-16 19:54:46,649 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2316 states. [2020-01-16 19:54:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states. [2020-01-16 19:54:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:54:46,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:54:46,725 INFO L415 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] [2020-01-16 19:54:46,726 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:54:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:54:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1886146014, now seen corresponding path program 1 times [2020-01-16 19:54:46,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:54:46,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828542532] [2020-01-16 19:54:46,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:54:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:54:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:54:47,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828542532] [2020-01-16 19:54:47,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:54:47,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 19:54:47,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1263406480] [2020-01-16 19:54:47,017 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:54:47,025 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:54:47,113 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:54:47,113 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:54:47,137 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2020-01-16 19:54:47,137 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 19:54:47,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:54:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 19:54:47,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:47,158 INFO L87 Difference]: Start difference. First operand 2316 states. Second operand 3 states. [2020-01-16 19:54:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:54:47,221 INFO L93 Difference]: Finished difference Result 1820 states and 7856 transitions. [2020-01-16 19:54:47,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 19:54:47,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-01-16 19:54:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:54:47,271 INFO L225 Difference]: With dead ends: 1820 [2020-01-16 19:54:47,271 INFO L226 Difference]: Without dead ends: 1819 [2020-01-16 19:54:47,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2020-01-16 19:54:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1819. [2020-01-16 19:54:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-01-16 19:54:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7855 transitions. [2020-01-16 19:54:47,460 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7855 transitions. Word has length 22 [2020-01-16 19:54:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:54:47,460 INFO L478 AbstractCegarLoop]: Abstraction has 1819 states and 7855 transitions. [2020-01-16 19:54:47,460 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 19:54:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7855 transitions. [2020-01-16 19:54:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:54:47,472 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:54:47,472 INFO L415 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] [2020-01-16 19:54:47,473 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:54:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:54:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1634401592, now seen corresponding path program 1 times [2020-01-16 19:54:47,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:54:47,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297267207] [2020-01-16 19:54:47,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:54:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:54:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:54:47,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297267207] [2020-01-16 19:54:47,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:54:47,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 19:54:47,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2064268721] [2020-01-16 19:54:47,536 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:54:47,538 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:54:47,624 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:54:47,624 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:54:47,634 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 5 times. [2020-01-16 19:54:47,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 19:54:47,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:54:47,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 19:54:47,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:47,639 INFO L87 Difference]: Start difference. First operand 1819 states and 7855 transitions. Second operand 3 states. [2020-01-16 19:54:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:54:47,679 INFO L93 Difference]: Finished difference Result 1275 states and 5199 transitions. [2020-01-16 19:54:47,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 19:54:47,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-01-16 19:54:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:54:47,694 INFO L225 Difference]: With dead ends: 1275 [2020-01-16 19:54:47,694 INFO L226 Difference]: Without dead ends: 1275 [2020-01-16 19:54:47,695 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-01-16 19:54:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1275. [2020-01-16 19:54:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1275 states. [2020-01-16 19:54:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 5199 transitions. [2020-01-16 19:54:47,821 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 5199 transitions. Word has length 22 [2020-01-16 19:54:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:54:47,821 INFO L478 AbstractCegarLoop]: Abstraction has 1275 states and 5199 transitions. [2020-01-16 19:54:47,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 19:54:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 5199 transitions. [2020-01-16 19:54:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:54:47,827 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:54:47,827 INFO L415 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] [2020-01-16 19:54:47,827 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:54:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:54:47,828 INFO L82 PathProgramCache]: Analyzing trace with hash -488840274, now seen corresponding path program 1 times [2020-01-16 19:54:47,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:54:47,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632276642] [2020-01-16 19:54:47,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:54:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:54:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:54:47,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632276642] [2020-01-16 19:54:47,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:54:47,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 19:54:47,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1666765752] [2020-01-16 19:54:47,863 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:54:47,864 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:54:47,913 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:54:47,913 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:54:47,918 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-01-16 19:54:47,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 19:54:47,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:54:47,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 19:54:47,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:47,921 INFO L87 Difference]: Start difference. First operand 1275 states and 5199 transitions. Second operand 3 states. [2020-01-16 19:54:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:54:47,950 INFO L93 Difference]: Finished difference Result 847 states and 3331 transitions. [2020-01-16 19:54:47,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 19:54:47,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-01-16 19:54:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:54:47,960 INFO L225 Difference]: With dead ends: 847 [2020-01-16 19:54:47,960 INFO L226 Difference]: Without dead ends: 847 [2020-01-16 19:54:47,961 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-01-16 19:54:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2020-01-16 19:54:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-01-16 19:54:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 3331 transitions. [2020-01-16 19:54:48,013 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 3331 transitions. Word has length 22 [2020-01-16 19:54:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:54:48,013 INFO L478 AbstractCegarLoop]: Abstraction has 847 states and 3331 transitions. [2020-01-16 19:54:48,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 19:54:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 3331 transitions. [2020-01-16 19:54:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:54:48,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:54:48,020 INFO L415 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] [2020-01-16 19:54:48,020 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:54:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:54:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash 625763952, now seen corresponding path program 1 times [2020-01-16 19:54:48,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:54:48,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354042450] [2020-01-16 19:54:48,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:54:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:54:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:54:48,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354042450] [2020-01-16 19:54:48,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:54:48,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 19:54:48,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2057624400] [2020-01-16 19:54:48,080 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:54:48,083 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:54:48,116 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:54:48,117 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:54:48,122 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-01-16 19:54:48,122 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 19:54:48,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:54:48,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 19:54:48,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:48,125 INFO L87 Difference]: Start difference. First operand 847 states and 3331 transitions. Second operand 3 states. [2020-01-16 19:54:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:54:48,147 INFO L93 Difference]: Finished difference Result 575 states and 2209 transitions. [2020-01-16 19:54:48,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 19:54:48,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-01-16 19:54:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:54:48,156 INFO L225 Difference]: With dead ends: 575 [2020-01-16 19:54:48,156 INFO L226 Difference]: Without dead ends: 575 [2020-01-16 19:54:48,156 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:54:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-01-16 19:54:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2020-01-16 19:54:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-01-16 19:54:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 2209 transitions. [2020-01-16 19:54:48,189 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 2209 transitions. Word has length 22 [2020-01-16 19:54:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:54:48,189 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 2209 transitions. [2020-01-16 19:54:48,189 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 19:54:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 2209 transitions. [2020-01-16 19:54:48,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:54:48,193 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:54:48,193 INFO L415 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] [2020-01-16 19:54:48,193 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:54:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:54:48,194 INFO L82 PathProgramCache]: Analyzing trace with hash 625764882, now seen corresponding path program 1 times [2020-01-16 19:54:48,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:54:48,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044667649] [2020-01-16 19:54:48,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:54:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:54:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:54:48,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044667649] [2020-01-16 19:54:48,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:54:48,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 19:54:48,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [263748960] [2020-01-16 19:54:48,864 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:54:48,865 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:54:48,898 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:54:48,898 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:55:11,393 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 285 times. [2020-01-16 19:55:11,394 INFO L458 AbstractCegarLoop]: Interpolant automaton has 215 states [2020-01-16 19:55:11,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:55:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2020-01-16 19:55:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3520, Invalid=42490, Unknown=0, NotChecked=0, Total=46010 [2020-01-16 19:55:11,411 INFO L87 Difference]: Start difference. First operand 575 states and 2209 transitions. Second operand 215 states. [2020-01-16 19:55:23,610 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-01-16 19:55:24,494 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-01-16 19:55:27,873 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:55:28,764 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-01-16 19:55:30,877 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:55:31,714 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-01-16 19:55:32,806 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:55:34,171 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-01-16 19:55:35,120 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-01-16 19:55:35,671 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-01-16 19:55:36,785 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-01-16 19:55:37,806 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-01-16 19:55:40,158 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:55:41,067 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-01-16 19:55:42,044 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:55:43,439 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:55:44,378 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:55:44,945 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-01-16 19:55:46,034 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-01-16 19:55:46,989 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-01-16 19:55:48,318 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:55:49,689 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-01-16 19:55:50,649 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:55:51,183 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-01-16 19:55:52,273 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-01-16 19:55:53,235 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-01-16 19:55:54,485 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:55:55,105 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-01-16 19:55:56,239 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:55:57,197 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-01-16 19:55:58,567 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-01-16 19:55:58,807 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 19:55:59,314 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-01-16 19:56:00,006 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-01-16 19:56:00,492 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:56:01,572 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-01-16 19:56:02,171 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:56:03,074 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:56:03,915 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:56:05,279 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:56:06,264 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:56:06,835 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:07,968 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:56:08,923 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:09,672 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-01-16 19:56:10,302 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:56:10,922 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:56:12,089 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-01-16 19:56:13,101 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:56:14,436 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:56:14,686 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 19:56:15,226 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-01-16 19:56:15,941 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-01-16 19:56:16,485 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:56:17,618 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:18,219 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-01-16 19:56:19,179 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:56:19,488 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-01-16 19:56:20,080 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:56:20,673 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:21,831 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:56:22,774 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:24,146 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:56:24,375 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2020-01-16 19:56:24,927 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-01-16 19:56:25,601 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-01-16 19:56:26,115 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:56:27,201 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-01-16 19:56:27,825 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-01-16 19:56:28,760 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:56:29,694 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:56:29,941 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 19:56:30,473 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-01-16 19:56:31,169 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-01-16 19:56:31,705 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:56:32,807 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:33,448 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-01-16 19:56:34,444 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:56:35,462 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:56:35,695 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 37 [2020-01-16 19:56:36,036 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-01-16 19:56:36,356 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:56:37,017 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2020-01-16 19:56:37,261 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:56:37,539 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:56:37,988 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:56:38,510 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:56:39,144 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-01-16 19:56:40,337 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:56:41,297 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:56:41,611 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-01-16 19:56:42,751 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:56:42,992 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2020-01-16 19:56:43,380 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-01-16 19:56:44,048 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:44,366 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-01-16 19:56:44,636 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:56:45,122 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-01-16 19:56:45,782 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:56:46,062 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-01-16 19:56:46,420 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-01-16 19:56:47,410 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:56:47,765 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-01-16 19:56:48,470 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:56:48,734 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-01-16 19:56:49,309 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-01-16 19:56:50,005 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:56:50,319 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-01-16 19:56:50,607 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:56:51,091 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-01-16 19:56:51,779 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-01-16 19:56:52,064 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-01-16 19:56:52,408 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:56:53,473 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:56:53,821 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-01-16 19:56:54,142 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-01-16 19:56:54,594 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:56:54,837 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2020-01-16 19:56:55,162 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-01-16 19:56:55,486 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:56:56,104 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-01-16 19:56:56,394 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:56:56,709 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-01-16 19:56:57,216 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:56:57,747 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:56:57,979 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-01-16 19:56:58,543 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-01-16 19:56:59,202 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-01-16 19:56:59,562 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-01-16 19:56:59,811 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:57:00,291 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-01-16 19:57:00,937 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:57:01,219 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-01-16 19:57:01,531 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-01-16 19:57:02,534 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:57:02,876 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-01-16 19:57:03,616 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:57:03,864 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-01-16 19:57:04,179 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:57:04,504 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2020-01-16 19:57:05,146 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-01-16 19:57:05,403 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:57:05,691 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-01-16 19:57:06,174 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-01-16 19:57:06,847 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:57:07,095 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2020-01-16 19:57:07,426 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-01-16 19:57:07,758 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:57:08,391 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-01-16 19:57:08,683 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:57:09,007 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-01-16 19:57:09,513 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:57:10,104 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-01-16 19:57:10,377 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2020-01-16 19:57:10,729 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:57:11,092 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-01-16 19:57:11,639 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-01-16 19:57:11,974 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-01-16 19:57:12,268 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 25 [2020-01-16 19:57:12,661 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:57:13,161 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:57:13,667 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:57:13,973 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:57:14,548 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:57:15,042 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-01-16 19:57:15,479 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-01-16 19:57:15,809 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-01-16 19:57:16,306 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:57:16,794 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:57:17,270 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:57:17,732 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-01-16 19:57:17,951 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 30 [2020-01-16 19:57:18,245 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:57:18,511 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-01-16 19:57:18,913 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:57:19,252 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-01-16 19:57:19,600 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:20,177 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-01-16 19:57:20,795 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:21,107 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-01-16 19:57:21,422 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:57:21,734 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-01-16 19:57:22,073 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 31 [2020-01-16 19:57:22,444 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:57:22,812 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:23,202 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:57:23,805 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-01-16 19:57:24,441 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-01-16 19:57:24,710 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-01-16 19:57:25,072 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:57:25,378 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 19:57:25,987 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:57:26,249 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-01-16 19:57:26,530 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:57:26,843 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-01-16 19:57:27,212 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2020-01-16 19:57:27,599 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-01-16 19:57:27,941 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-01-16 19:57:28,282 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-01-16 19:57:28,937 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-01-16 19:57:29,607 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-01-16 19:57:29,888 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-01-16 19:57:30,229 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-01-16 19:57:30,541 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 19:57:31,141 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-01-16 19:57:31,427 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-01-16 19:57:31,789 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:57:32,130 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-01-16 19:57:32,670 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-01-16 19:57:33,041 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-01-16 19:57:34,361 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-01-16 19:57:34,648 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-01-16 19:57:35,246 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:35,588 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:57:36,204 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:36,539 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:57:37,144 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-01-16 19:57:37,484 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-01-16 19:57:38,045 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:38,402 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:57:38,856 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-01-16 19:57:39,204 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-01-16 19:57:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:57:40,691 INFO L93 Difference]: Finished difference Result 1494 states and 5002 transitions. [2020-01-16 19:57:40,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 473 states. [2020-01-16 19:57:40,693 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 22 [2020-01-16 19:57:40,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:57:40,701 INFO L225 Difference]: With dead ends: 1494 [2020-01-16 19:57:40,701 INFO L226 Difference]: Without dead ends: 1095 [2020-01-16 19:57:40,718 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 642 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114070 ImplicationChecksByTransitivity, 129.0s TimeCoverageRelationStatistics Valid=67584, Invalid=346508, Unknown=0, NotChecked=0, Total=414092 [2020-01-16 19:57:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-01-16 19:57:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 661. [2020-01-16 19:57:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-01-16 19:57:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 2445 transitions. [2020-01-16 19:57:40,751 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 2445 transitions. Word has length 22 [2020-01-16 19:57:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:57:40,752 INFO L478 AbstractCegarLoop]: Abstraction has 661 states and 2445 transitions. [2020-01-16 19:57:40,752 INFO L479 AbstractCegarLoop]: Interpolant automaton has 215 states. [2020-01-16 19:57:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 2445 transitions. [2020-01-16 19:57:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:57:40,754 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:57:40,754 INFO L415 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] [2020-01-16 19:57:40,755 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:57:40,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:57:40,755 INFO L82 PathProgramCache]: Analyzing trace with hash -154800362, now seen corresponding path program 1 times [2020-01-16 19:57:40,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:57:40,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117193162] [2020-01-16 19:57:40,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:57:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:57:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:57:40,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117193162] [2020-01-16 19:57:40,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:57:40,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 19:57:40,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2052381853] [2020-01-16 19:57:40,792 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:57:40,795 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:57:40,826 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:57:40,827 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:57:40,831 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 5 times. [2020-01-16 19:57:40,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 19:57:40,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:57:40,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 19:57:40,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:57:40,832 INFO L87 Difference]: Start difference. First operand 661 states and 2445 transitions. Second operand 3 states. [2020-01-16 19:57:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:57:40,843 INFO L93 Difference]: Finished difference Result 517 states and 1773 transitions. [2020-01-16 19:57:40,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 19:57:40,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-01-16 19:57:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:57:40,848 INFO L225 Difference]: With dead ends: 517 [2020-01-16 19:57:40,848 INFO L226 Difference]: Without dead ends: 389 [2020-01-16 19:57:40,849 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:57:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-01-16 19:57:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 343. [2020-01-16 19:57:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 19:57:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1141 transitions. [2020-01-16 19:57:40,867 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1141 transitions. Word has length 22 [2020-01-16 19:57:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:57:40,867 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1141 transitions. [2020-01-16 19:57:40,867 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 19:57:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1141 transitions. [2020-01-16 19:57:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-01-16 19:57:40,870 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:57:40,870 INFO L415 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] [2020-01-16 19:57:40,870 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:57:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:57:40,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1571949596, now seen corresponding path program 1 times [2020-01-16 19:57:40,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:57:40,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307729180] [2020-01-16 19:57:40,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:57:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:57:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:57:40,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307729180] [2020-01-16 19:57:40,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:57:40,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 19:57:40,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1128738810] [2020-01-16 19:57:40,891 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 19:57:40,893 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 19:57:40,934 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 383 states and 1345 transitions. [2020-01-16 19:57:40,934 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 19:57:40,938 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 5 times. [2020-01-16 19:57:40,938 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 19:57:40,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:57:40,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 19:57:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:57:40,939 INFO L87 Difference]: Start difference. First operand 343 states and 1141 transitions. Second operand 3 states. [2020-01-16 19:57:40,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:57:40,942 INFO L93 Difference]: Finished difference Result 231 states and 772 transitions. [2020-01-16 19:57:40,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 19:57:40,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-01-16 19:57:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:57:40,943 INFO L225 Difference]: With dead ends: 231 [2020-01-16 19:57:40,943 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 19:57:40,943 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 19:57:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 19:57:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 19:57:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 19:57:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 19:57:40,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-01-16 19:57:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:57:40,945 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 19:57:40,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 19:57:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 19:57:40,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 19:57:40,950 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 07:57:40 BasicIcfg [2020-01-16 19:57:40,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 19:57:40,952 INFO L168 Benchmark]: Toolchain (without parser) took 175905.49 ms. Allocated memory was 143.1 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 119.4 MB in the beginning and 612.0 MB in the end (delta: -492.6 MB). Peak memory consumption was 716.4 MB. Max. memory is 7.1 GB. [2020-01-16 19:57:40,953 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 19:57:40,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.06 ms. Allocated memory is still 143.1 MB. Free memory was 119.2 MB in the beginning and 117.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 19:57:40,954 INFO L168 Benchmark]: Boogie Preprocessor took 21.85 ms. Allocated memory is still 143.1 MB. Free memory was 117.5 MB in the beginning and 116.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 19:57:40,954 INFO L168 Benchmark]: RCFGBuilder took 355.75 ms. Allocated memory is still 143.1 MB. Free memory was 116.4 MB in the beginning and 103.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-01-16 19:57:40,954 INFO L168 Benchmark]: TraceAbstraction took 175484.19 ms. Allocated memory was 143.1 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 103.4 MB in the beginning and 612.0 MB in the end (delta: -508.6 MB). Peak memory consumption was 700.4 MB. Max. memory is 7.1 GB. [2020-01-16 19:57:40,956 INFO L335 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 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.06 ms. Allocated memory is still 143.1 MB. Free memory was 119.2 MB in the beginning and 117.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.85 ms. Allocated memory is still 143.1 MB. Free memory was 117.5 MB in the beginning and 116.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.75 ms. Allocated memory is still 143.1 MB. Free memory was 116.4 MB in the beginning and 103.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 175484.19 ms. Allocated memory was 143.1 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 103.4 MB in the beginning and 612.0 MB in the end (delta: -508.6 MB). Peak memory consumption was 700.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 60 ProgramPointsBefore, 51 ProgramPointsAfterwards, 80 TransitionsBefore, 72 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 336 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 357 CheckedPairsTotal, 8 TotalNumberOfCompositions - PositiveResult [Line: 27]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 175.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 149.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1394 SDtfs, 3402 SDslu, 45656 SDs, 0 SdLazy, 39704 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 648 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114070 ImplicationChecksByTransitivity, 129.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2316occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 480 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 14595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...