/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-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 22:32:13,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 22:32:13,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 22:32:13,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 22:32:13,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 22:32:13,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 22:32:13,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 22:32:13,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 22:32:13,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 22:32:13,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 22:32:13,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 22:32:13,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 22:32:13,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 22:32:13,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 22:32:13,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 22:32:13,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 22:32:13,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 22:32:13,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 22:32:13,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 22:32:13,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 22:32:13,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 22:32:13,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 22:32:13,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 22:32:13,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 22:32:13,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-02-10 22:32:13,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-02-10 22:32:13,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-02-10 22:32:13,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-02-10 22:32:13,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-02-10 22:32:13,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-02-10 22:32:13,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-02-10 22:32:13,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-02-10 22:32:13,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-02-10 22:32:13,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-02-10 22:32:13,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-02-10 22:32:13,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-02-10 22:32:13,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-02-10 22:32:13,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-02-10 22:32:13,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 22:32:13,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 22:32:13,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 22:32:13,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-MCR.epf [2020-02-10 22:32:13,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 22:32:13,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 22:32:13,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 22:32:13,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 22:32:13,662 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 22:32:13,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 22:32:13,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 22:32:13,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 22:32:13,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 22:32:13,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 22:32:13,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 22:32:13,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 22:32:13,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 22:32:13,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 22:32:13,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 22:32:13,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 22:32:13,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 22:32:13,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 22:32:13,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 22:32:13,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 22:32:13,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 22:32:13,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 22:32:13,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 22:32:13,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 22:32:13,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 22:32:13,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 22:32:13,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 22:32:13,667 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-02-10 22:32:13,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-02-10 22:32:13,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-02-10 22:32:13,667 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-02-10 22:32:13,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 22:32:13,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 22:32:13,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 22:32:13,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 22:32:13,969 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 22:32:13,969 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 22:32:13,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-02-10 22:32:13,971 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-02-10 22:32:14,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 22:32:14,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 22:32:14,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 22:32:14,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 22:32:14,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 22:32:14,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 22:32:14,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 22:32:14,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 22:32:14,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 22:32:14,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 22:32:14,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 22:32:14,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 22:32:14,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 22:32:14,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (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 [2020-02-10 22:32:14,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 22:32:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 22:32:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 22:32:14,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 22:32:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 22:32:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 22:32:14,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 22:32:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 22:32:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 22:32:14,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 22:32:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 22:32:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 22:32:14,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 22:32:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 22:32:14,156 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 22:32:14,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 22:32:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 22:32:14,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 22:32:14,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 22:32:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 22:32:14,157 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 22:32:14,158 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 22:32:14,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 22:32:14,407 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 22:32:14,411 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:32:14 BoogieIcfgContainer [2020-02-10 22:32:14,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 22:32:14,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 22:32:14,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 22:32:14,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 22:32:14,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/2) ... [2020-02-10 22:32:14,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d85657 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:32:14, skipping insertion in model container [2020-02-10 22:32:14,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:32:14" (2/2) ... [2020-02-10 22:32:14,432 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-02-10 22:32:14,452 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-02-10 22:32:14,452 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 22:32:14,462 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 22:32:14,463 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 22:32:14,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-02-10 22:32:14,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 22:32:14,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-02-10 22:32:14,713 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 22:32:14,713 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-02-10 22:32:14,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 22:32:14,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 22:32:14,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 22:32:14,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 22:32:14,726 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions [2020-02-10 22:32:15,122 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4463 states. [2020-02-10 22:32:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states. [2020-02-10 22:32:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-02-10 22:32:15,210 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:15,211 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, 1, 1, 1] [2020-02-10 22:32:15,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:15,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1530136965, now seen corresponding path program 1 times [2020-02-10 22:32:15,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:15,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955649820] [2020-02-10 22:32:15,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:15,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955649820] [2020-02-10 22:32:15,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:15,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:15,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1833971933] [2020-02-10 22:32:15,520 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:15,527 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:15,794 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-02-10 22:32:15,794 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:15,823 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 11 times. [2020-02-10 22:32:15,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:15,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:15,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:15,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:15,841 INFO L87 Difference]: Start difference. First operand 4463 states. Second operand 3 states. [2020-02-10 22:32:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:15,924 INFO L93 Difference]: Finished difference Result 3545 states and 15330 transitions. [2020-02-10 22:32:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:15,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-02-10 22:32:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:15,982 INFO L225 Difference]: With dead ends: 3545 [2020-02-10 22:32:15,983 INFO L226 Difference]: Without dead ends: 3543 [2020-02-10 22:32:15,986 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2020-02-10 22:32:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2020-02-10 22:32:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2020-02-10 22:32:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2020-02-10 22:32:16,309 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2020-02-10 22:32:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:16,310 INFO L479 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2020-02-10 22:32:16,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2020-02-10 22:32:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-02-10 22:32:16,329 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:16,329 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, 1, 1, 1] [2020-02-10 22:32:16,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1760531173, now seen corresponding path program 1 times [2020-02-10 22:32:16,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:16,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738307940] [2020-02-10 22:32:16,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:16,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738307940] [2020-02-10 22:32:16,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:16,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:16,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1077511672] [2020-02-10 22:32:16,364 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:16,366 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:16,531 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-02-10 22:32:16,531 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:16,546 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 13 times. [2020-02-10 22:32:16,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:16,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:16,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:16,549 INFO L87 Difference]: Start difference. First operand 3543 states and 15328 transitions. Second operand 3 states. [2020-02-10 22:32:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:16,628 INFO L93 Difference]: Finished difference Result 2724 states and 11575 transitions. [2020-02-10 22:32:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:16,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-02-10 22:32:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:16,656 INFO L225 Difference]: With dead ends: 2724 [2020-02-10 22:32:16,656 INFO L226 Difference]: Without dead ends: 2724 [2020-02-10 22:32:16,658 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2020-02-10 22:32:16,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2724. [2020-02-10 22:32:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-02-10 22:32:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 11575 transitions. [2020-02-10 22:32:16,812 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 11575 transitions. Word has length 25 [2020-02-10 22:32:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:16,813 INFO L479 AbstractCegarLoop]: Abstraction has 2724 states and 11575 transitions. [2020-02-10 22:32:16,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 11575 transitions. [2020-02-10 22:32:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-02-10 22:32:16,826 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:16,826 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, 1, 1, 1] [2020-02-10 22:32:16,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:16,827 INFO L82 PathProgramCache]: Analyzing trace with hash 726058139, now seen corresponding path program 1 times [2020-02-10 22:32:16,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:16,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277001967] [2020-02-10 22:32:16,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:16,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277001967] [2020-02-10 22:32:16,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:16,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:16,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1182748693] [2020-02-10 22:32:16,897 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:16,901 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:17,045 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-02-10 22:32:17,046 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:17,058 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 16 times. [2020-02-10 22:32:17,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:17,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:17,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:17,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:17,059 INFO L87 Difference]: Start difference. First operand 2724 states and 11575 transitions. Second operand 3 states. [2020-02-10 22:32:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:17,103 INFO L93 Difference]: Finished difference Result 2106 states and 8830 transitions. [2020-02-10 22:32:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:17,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-02-10 22:32:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:17,122 INFO L225 Difference]: With dead ends: 2106 [2020-02-10 22:32:17,123 INFO L226 Difference]: Without dead ends: 2106 [2020-02-10 22:32:17,123 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-02-10 22:32:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2020-02-10 22:32:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-02-10 22:32:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2020-02-10 22:32:17,224 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2020-02-10 22:32:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:17,224 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2020-02-10 22:32:17,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2020-02-10 22:32:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-02-10 22:32:17,234 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:17,234 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, 1, 1, 1] [2020-02-10 22:32:17,235 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:17,235 INFO L82 PathProgramCache]: Analyzing trace with hash 130806073, now seen corresponding path program 1 times [2020-02-10 22:32:17,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:17,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431511661] [2020-02-10 22:32:17,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:17,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431511661] [2020-02-10 22:32:17,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:17,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:17,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [267088742] [2020-02-10 22:32:17,300 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:17,302 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:17,451 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-02-10 22:32:17,452 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:17,462 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-02-10 22:32:17,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:17,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:17,464 INFO L87 Difference]: Start difference. First operand 2106 states and 8830 transitions. Second operand 3 states. [2020-02-10 22:32:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:17,487 INFO L93 Difference]: Finished difference Result 1863 states and 7615 transitions. [2020-02-10 22:32:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:17,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-02-10 22:32:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:17,504 INFO L225 Difference]: With dead ends: 1863 [2020-02-10 22:32:17,504 INFO L226 Difference]: Without dead ends: 1863 [2020-02-10 22:32:17,505 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2020-02-10 22:32:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2020-02-10 22:32:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1863 states. [2020-02-10 22:32:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2020-02-10 22:32:17,583 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2020-02-10 22:32:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:17,584 INFO L479 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2020-02-10 22:32:17,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2020-02-10 22:32:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-02-10 22:32:17,591 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:17,591 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, 1, 1, 1] [2020-02-10 22:32:17,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:17,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:17,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1353410907, now seen corresponding path program 1 times [2020-02-10 22:32:17,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:17,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439852500] [2020-02-10 22:32:17,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:18,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439852500] [2020-02-10 22:32:18,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:18,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 22:32:18,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [411955258] [2020-02-10 22:32:18,013 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:18,015 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:18,123 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-02-10 22:32:18,124 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:20,280 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 144 times. [2020-02-10 22:32:20,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-02-10 22:32:20,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:20,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-02-10 22:32:20,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=667, Invalid=3493, Unknown=0, NotChecked=0, Total=4160 [2020-02-10 22:32:20,283 INFO L87 Difference]: Start difference. First operand 1863 states and 7615 transitions. Second operand 65 states. [2020-02-10 22:32:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:21,652 INFO L93 Difference]: Finished difference Result 1862 states and 7614 transitions. [2020-02-10 22:32:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-02-10 22:32:21,653 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 25 [2020-02-10 22:32:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:21,653 INFO L225 Difference]: With dead ends: 1862 [2020-02-10 22:32:21,653 INFO L226 Difference]: Without dead ends: 0 [2020-02-10 22:32:21,655 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2751 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=732, Invalid=3558, Unknown=0, NotChecked=0, Total=4290 [2020-02-10 22:32:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-02-10 22:32:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-02-10 22:32:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-02-10 22:32:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-02-10 22:32:21,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-02-10 22:32:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:21,656 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-02-10 22:32:21,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-02-10 22:32:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-02-10 22:32:21,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-02-10 22:32:21,662 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 10:32:21 BasicIcfg [2020-02-10 22:32:21,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 22:32:21,666 INFO L168 Benchmark]: Toolchain (without parser) took 7650.47 ms. Allocated memory was 145.2 MB in the beginning and 398.5 MB in the end (delta: 253.2 MB). Free memory was 120.3 MB in the beginning and 152.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 220.6 MB. Max. memory is 7.1 GB. [2020-02-10 22:32:21,667 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 22:32:21,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.08 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 118.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-02-10 22:32:21,668 INFO L168 Benchmark]: Boogie Preprocessor took 22.64 ms. Allocated memory is still 145.2 MB. Free memory was 118.3 MB in the beginning and 117.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 22:32:21,669 INFO L168 Benchmark]: RCFGBuilder took 337.65 ms. Allocated memory is still 145.2 MB. Free memory was 117.1 MB in the beginning and 105.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-02-10 22:32:21,670 INFO L168 Benchmark]: TraceAbstraction took 7246.94 ms. Allocated memory was 145.2 MB in the beginning and 398.5 MB in the end (delta: 253.2 MB). Free memory was 104.6 MB in the beginning and 152.9 MB in the end (delta: -48.3 MB). Peak memory consumption was 205.0 MB. Max. memory is 7.1 GB. [2020-02-10 22:32:21,674 INFO L336 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 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 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 35.08 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 118.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.64 ms. Allocated memory is still 145.2 MB. Free memory was 118.3 MB in the beginning and 117.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.65 ms. Allocated memory is still 145.2 MB. Free memory was 117.1 MB in the beginning and 105.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7246.94 ms. Allocated memory was 145.2 MB in the beginning and 398.5 MB in the end (delta: 253.2 MB). Free memory was 104.6 MB in the beginning and 152.9 MB in the end (delta: -48.3 MB). Peak memory consumption was 205.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 6.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 779 SDtfs, 733 SDslu, 5870 SDs, 0 SdLazy, 982 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2751 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred 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: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 15648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...