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/Problem11_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 17:59:26,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 17:59:26,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 17:59:26,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 17:59:26,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 17:59:26,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 17:59:26,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 17:59:26,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 17:59:26,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 17:59:26,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 17:59:26,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 17:59:26,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 17:59:26,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 17:59:26,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 17:59:26,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 17:59:26,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 17:59:26,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 17:59:26,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 17:59:26,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 17:59:26,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 17:59:26,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 17:59:26,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 17:59:26,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 17:59:26,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 17:59:26,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 17:59:26,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 17:59:26,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 17:59:26,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 17:59:26,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 17:59:26,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 17:59:26,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 17:59:26,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 17:59:26,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 17:59:26,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 17:59:26,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 17:59:26,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 17:59:26,736 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 17:59:26,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 17:59:26,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 17:59:26,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 17:59:26,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 17:59:26,764 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 17:59:26,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 17:59:26,764 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 17:59:26,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 17:59:26,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 17:59:26,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 17:59:26,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 17:59:26,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 17:59:26,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 17:59:26,767 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 17:59:26,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 17:59:26,767 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 17:59:26,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 17:59:26,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 17:59:26,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 17:59:26,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 17:59:26,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 17:59:26,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:59:26,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 17:59:26,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 17:59:26,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 17:59:26,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 17:59:26,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 17:59:26,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 17:59:26,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 17:59:27,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 17:59:27,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 17:59:27,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 17:59:27,078 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 17:59:27,078 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 17:59:27,079 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2019-10-13 17:59:27,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379d99925/6389204e15074e1a9fd6b505ce1d272f/FLAG7be21c378 [2019-10-13 17:59:27,784 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 17:59:27,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2019-10-13 17:59:27,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379d99925/6389204e15074e1a9fd6b505ce1d272f/FLAG7be21c378 [2019-10-13 17:59:28,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379d99925/6389204e15074e1a9fd6b505ce1d272f [2019-10-13 17:59:28,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 17:59:28,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 17:59:28,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 17:59:28,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 17:59:28,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 17:59:28,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:28" (1/1) ... [2019-10-13 17:59:28,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b57f279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:28, skipping insertion in model container [2019-10-13 17:59:28,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:28" (1/1) ... [2019-10-13 17:59:28,047 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 17:59:28,105 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 17:59:28,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:59:28,826 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 17:59:29,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:59:29,054 INFO L192 MainTranslator]: Completed translation [2019-10-13 17:59:29,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29 WrapperNode [2019-10-13 17:59:29,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 17:59:29,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 17:59:29,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 17:59:29,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 17:59:29,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (1/1) ... [2019-10-13 17:59:29,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 17:59:29,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 17:59:29,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 17:59:29,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 17:59:29,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (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 17:59:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 17:59:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 17:59:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 17:59:29,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 17:59:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 17:59:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 17:59:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 17:59:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 17:59:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 17:59:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 17:59:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 17:59:31,227 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 17:59:31,228 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 17:59:31,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:31 BoogieIcfgContainer [2019-10-13 17:59:31,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 17:59:31,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 17:59:31,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 17:59:31,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 17:59:31,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:59:28" (1/3) ... [2019-10-13 17:59:31,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0ed1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:31, skipping insertion in model container [2019-10-13 17:59:31,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:29" (2/3) ... [2019-10-13 17:59:31,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0ed1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:31, skipping insertion in model container [2019-10-13 17:59:31,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:31" (3/3) ... [2019-10-13 17:59:31,238 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label06.c [2019-10-13 17:59:31,248 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 17:59:31,256 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 17:59:31,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 17:59:31,299 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 17:59:31,299 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 17:59:31,299 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 17:59:31,299 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 17:59:31,299 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 17:59:31,300 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 17:59:31,300 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 17:59:31,300 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 17:59:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-13 17:59:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-13 17:59:31,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:31,339 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] [2019-10-13 17:59:31,341 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1780384174, now seen corresponding path program 1 times [2019-10-13 17:59:31,357 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:31,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671339065] [2019-10-13 17:59:31,358 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:31,358 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:31,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:31,821 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 17:59:31,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671339065] [2019-10-13 17:59:31,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:59:31,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 17:59:31,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384027129] [2019-10-13 17:59:31,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:59:31,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:31,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:59:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 17:59:31,846 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-13 17:59:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:35,175 INFO L93 Difference]: Finished difference Result 999 states and 1795 transitions. [2019-10-13 17:59:35,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 17:59:35,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-10-13 17:59:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:35,211 INFO L225 Difference]: With dead ends: 999 [2019-10-13 17:59:35,211 INFO L226 Difference]: Without dead ends: 639 [2019-10-13 17:59:35,224 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 17:59:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-13 17:59:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 621. [2019-10-13 17:59:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-13 17:59:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 956 transitions. [2019-10-13 17:59:35,326 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 956 transitions. Word has length 69 [2019-10-13 17:59:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:35,327 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 956 transitions. [2019-10-13 17:59:35,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:59:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 956 transitions. [2019-10-13 17:59:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 17:59:35,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:35,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:35,336 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:35,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:35,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1517741782, now seen corresponding path program 1 times [2019-10-13 17:59:35,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:35,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855206757] [2019-10-13 17:59:35,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:35,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:35,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:35,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855206757] [2019-10-13 17:59:35,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458164354] [2019-10-13 17:59:35,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 17:59:35,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:35,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 17:59:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:36,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:59:36,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-10-13 17:59:36,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042877059] [2019-10-13 17:59:36,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:59:36,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:36,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:59:36,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 17:59:36,033 INFO L87 Difference]: Start difference. First operand 621 states and 956 transitions. Second operand 5 states. [2019-10-13 17:59:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:37,910 INFO L93 Difference]: Finished difference Result 1833 states and 2866 transitions. [2019-10-13 17:59:37,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 17:59:37,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-13 17:59:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:37,920 INFO L225 Difference]: With dead ends: 1833 [2019-10-13 17:59:37,920 INFO L226 Difference]: Without dead ends: 1218 [2019-10-13 17:59:37,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-13 17:59:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-10-13 17:59:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1009. [2019-10-13 17:59:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-13 17:59:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1374 transitions. [2019-10-13 17:59:37,991 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1374 transitions. Word has length 143 [2019-10-13 17:59:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:37,992 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1374 transitions. [2019-10-13 17:59:37,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:59:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1374 transitions. [2019-10-13 17:59:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-13 17:59:38,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:38,006 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2019-10-13 17:59:38,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:38,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:38,217 INFO L82 PathProgramCache]: Analyzing trace with hash 156853724, now seen corresponding path program 1 times [2019-10-13 17:59:38,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:38,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131912887] [2019-10-13 17:59:38,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:38,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:38,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 17:59:38,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131912887] [2019-10-13 17:59:38,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124659873] [2019-10-13 17:59:38,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:38,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 17:59:38,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:38,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:38,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:47,285 WARN L191 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2019-10-13 17:59:47,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 17:59:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 17:59:49,617 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:59:49,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-10-13 17:59:49,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224784616] [2019-10-13 17:59:49,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 17:59:49,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:49,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 17:59:49,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2019-10-13 17:59:49,620 INFO L87 Difference]: Start difference. First operand 1009 states and 1374 transitions. Second operand 11 states. [2019-10-13 17:59:58,474 WARN L191 SmtUtils]: Spent 8.02 s on a formula simplification. DAG size of input: 54 DAG size of output: 21