java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:01:20,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:01:20,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:01:20,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:01:20,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:01:20,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:01:20,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:01:20,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:01:20,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:01:20,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:01:20,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:01:20,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:01:20,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:01:20,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:01:20,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:01:20,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:01:20,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:01:20,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:01:20,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:01:20,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:01:20,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:01:20,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:01:20,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:01:20,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:01:20,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:01:20,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:01:20,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:01:20,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:01:20,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:01:20,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:01:20,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:01:20,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:01:20,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:01:20,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:01:20,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:01:20,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:01:20,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:01:20,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:01:20,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:01:20,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:01:20,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:01:20,631 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:01:20,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:01:20,632 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:01:20,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:01:20,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:01:20,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:01:20,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:01:20,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:01:20,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:01:20,633 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:01:20,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:01:20,634 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:01:20,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:01:20,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:01:20,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:01:20,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:01:20,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:01:20,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:01:20,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:01:20,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:01:20,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:01:20,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:01:20,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:01:20,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:01:20,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:01:20,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:01:20,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:01:20,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:01:20,939 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:01:20,939 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:01:20,940 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-13 18:01:21,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e5673b1/159f517fc46e403c81e1a89fb53bb4bf/FLAG99ad29c17 [2019-10-13 18:01:21,806 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:01:21,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-13 18:01:21,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e5673b1/159f517fc46e403c81e1a89fb53bb4bf/FLAG99ad29c17 [2019-10-13 18:01:21,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e5673b1/159f517fc46e403c81e1a89fb53bb4bf [2019-10-13 18:01:21,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:01:21,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:01:21,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:01:21,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:01:21,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:01:21,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:21" (1/1) ... [2019-10-13 18:01:21,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cbab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:21, skipping insertion in model container [2019-10-13 18:01:21,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:21" (1/1) ... [2019-10-13 18:01:21,921 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:01:22,071 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:01:23,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:01:23,493 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:01:24,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:01:24,069 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:01:24,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24 WrapperNode [2019-10-13 18:01:24,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:01:24,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:01:24,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:01:24,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:01:24,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (1/1) ... [2019-10-13 18:01:24,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:01:24,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:01:24,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:01:24,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:01:24,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (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 [2019-10-13 18:01:24,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:01:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:01:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:01:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:01:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:01:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 18:01:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:01:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:01:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:01:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:01:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 18:01:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:01:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:01:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:01:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:01:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:01:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:01:29,662 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:01:29,667 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:01:29,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:01:29 BoogieIcfgContainer [2019-10-13 18:01:29,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:01:29,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:01:29,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:01:29,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:01:29,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:01:21" (1/3) ... [2019-10-13 18:01:29,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309b19d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:01:29, skipping insertion in model container [2019-10-13 18:01:29,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:24" (2/3) ... [2019-10-13 18:01:29,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309b19d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:01:29, skipping insertion in model container [2019-10-13 18:01:29,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:01:29" (3/3) ... [2019-10-13 18:01:29,684 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-10-13 18:01:29,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:01:29,706 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:01:29,718 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:01:29,762 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:01:29,762 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:01:29,762 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:01:29,763 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:01:29,763 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:01:29,763 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:01:29,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:01:29,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:01:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 18:01:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 18:01:29,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:01:29,819 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:01:29,821 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:01:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:01:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1204475243, now seen corresponding path program 1 times [2019-10-13 18:01:29,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:01:29,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213421085] [2019-10-13 18:01:29,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:01:29,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:01:29,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:01:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:01:30,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213421085] [2019-10-13 18:01:30,309 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:01:30,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:01:30,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930793639] [2019-10-13 18:01:30,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:01:30,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:01:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:01:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:01:30,332 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-10-13 18:01:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:01:41,720 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2019-10-13 18:01:41,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:01:41,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-13 18:01:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:01:41,761 INFO L225 Difference]: With dead ends: 3253 [2019-10-13 18:01:41,762 INFO L226 Difference]: Without dead ends: 2346 [2019-10-13 18:01:41,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:01:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2019-10-13 18:01:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2019-10-13 18:01:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2019-10-13 18:01:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2019-10-13 18:01:41,937 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 70 [2019-10-13 18:01:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:01:41,938 INFO L462 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2019-10-13 18:01:41,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:01:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2019-10-13 18:01:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 18:01:41,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:01:41,946 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:01:41,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:01:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:01:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2056007356, now seen corresponding path program 1 times [2019-10-13 18:01:41,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:01:41,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29304240] [2019-10-13 18:01:41,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:01:41,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:01:41,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:01:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:01:42,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29304240] [2019-10-13 18:01:42,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:01:42,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:01:42,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144964372] [2019-10-13 18:01:42,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:01:42,314 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:01:42,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:01:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:01:42,315 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 9 states. [2019-10-13 18:01:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:01:51,723 INFO L93 Difference]: Finished difference Result 7110 states and 11893 transitions. [2019-10-13 18:01:51,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:01:51,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2019-10-13 18:01:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:01:51,756 INFO L225 Difference]: With dead ends: 7110 [2019-10-13 18:01:51,757 INFO L226 Difference]: Without dead ends: 4785 [2019-10-13 18:01:51,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:01:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2019-10-13 18:01:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4725. [2019-10-13 18:01:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4725 states. [2019-10-13 18:01:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7714 transitions. [2019-10-13 18:01:51,928 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7714 transitions. Word has length 148 [2019-10-13 18:01:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:01:51,931 INFO L462 AbstractCegarLoop]: Abstraction has 4725 states and 7714 transitions. [2019-10-13 18:01:51,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:01:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7714 transitions. [2019-10-13 18:01:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 18:01:51,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:01:51,942 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2019-10-13 18:01:51,942 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:01:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:01:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1970984891, now seen corresponding path program 1 times [2019-10-13 18:01:51,943 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:01:51,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695454309] [2019-10-13 18:01:51,944 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:01:51,944 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:01:51,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:01:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:01:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:01:52,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695454309] [2019-10-13 18:01:52,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:01:52,306 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 18:01:52,306 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126781274] [2019-10-13 18:01:52,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 18:01:52,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:01:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 18:01:52,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:01:52,308 INFO L87 Difference]: Start difference. First operand 4725 states and 7714 transitions. Second operand 7 states.