/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:11:37,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:11:37,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:11:38,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:11:38,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:11:38,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:11:38,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:11:38,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:11:38,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:11:38,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:11:38,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:11:38,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:11:38,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:11:38,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:11:38,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:11:38,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:11:38,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:11:38,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:11:38,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:11:38,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:11:38,073 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 [2019-11-06 19:11:38,106 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:11:38,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:11:38,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:11:38,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:11:38,111 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:11:38,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:11:38,111 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:11:38,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:11:38,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:11:38,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:11:38,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:11:38,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:11:38,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:11:38,113 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:11:38,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:11:38,113 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:11:38,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:11:38,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:11:38,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:11:38,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:11:38,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:11:38,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:11:38,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:11:38,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:11:38,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:11:38,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:11:38,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:11:38,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:11:38,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:11:38,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:11:38,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:11:38,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:11:38,399 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:11:38,399 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:11:38,400 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2019-11-06 19:11:38,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1720811e3/64cf20cc80754e48bd892f73eb388db9/FLAGbc105ff0b [2019-11-06 19:11:39,314 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:11:39,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45.c [2019-11-06 19:11:39,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1720811e3/64cf20cc80754e48bd892f73eb388db9/FLAGbc105ff0b [2019-11-06 19:11:39,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1720811e3/64cf20cc80754e48bd892f73eb388db9 [2019-11-06 19:11:39,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:11:39,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:11:39,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:39,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:11:39,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:11:39,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:39" (1/1) ... [2019-11-06 19:11:39,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f9a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:39, skipping insertion in model container [2019-11-06 19:11:39,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:39" (1/1) ... [2019-11-06 19:11:39,847 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:11:39,992 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:11:41,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:41,411 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:11:42,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:42,155 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:11:42,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42 WrapperNode [2019-11-06 19:11:42,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:42,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:11:42,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:11:42,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:11:42,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (1/1) ... [2019-11-06 19:11:42,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:11:42,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:11:42,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:11:42,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:11:42,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (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 [2019-11-06 19:11:42,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:11:42,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:11:42,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:11:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:11:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:11:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:11:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:11:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:11:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:11:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:11:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:11:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:11:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:11:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:11:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:11:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:11:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:11:47,089 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:11:47,090 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:11:47,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:47 BoogieIcfgContainer [2019-11-06 19:11:47,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:11:47,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:11:47,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:11:47,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:11:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:11:39" (1/3) ... [2019-11-06 19:11:47,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2141b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:47, skipping insertion in model container [2019-11-06 19:11:47,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:42" (2/3) ... [2019-11-06 19:11:47,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2141b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:47, skipping insertion in model container [2019-11-06 19:11:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:47" (3/3) ... [2019-11-06 19:11:47,112 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2019-11-06 19:11:47,121 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:11:47,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:11:47,138 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:11:47,178 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:11:47,178 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:11:47,179 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:11:47,179 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:11:47,179 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:11:47,179 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:11:47,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:11:47,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:11:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 19:11:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 19:11:47,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:47,230 INFO L410 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] [2019-11-06 19:11:47,232 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash -157974758, now seen corresponding path program 1 times [2019-11-06 19:11:47,245 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:47,245 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696854908] [2019-11-06 19:11:47,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:11:47,623 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696854908] [2019-11-06 19:11:47,624 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:11:47,624 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:11:47,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133202270] [2019-11-06 19:11:47,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:11:47,633 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:47,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:11:47,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:11:47,649 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-11-06 19:12:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:12:00,121 INFO L93 Difference]: Finished difference Result 3253 states and 6294 transitions. [2019-11-06 19:12:00,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:12:00,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2019-11-06 19:12:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:12:00,163 INFO L225 Difference]: With dead ends: 3253 [2019-11-06 19:12:00,163 INFO L226 Difference]: Without dead ends: 2346 [2019-11-06 19:12:00,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:12:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2019-11-06 19:12:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2019-11-06 19:12:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2019-11-06 19:12:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3787 transitions. [2019-11-06 19:12:00,364 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3787 transitions. Word has length 57 [2019-11-06 19:12:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:12:00,365 INFO L462 AbstractCegarLoop]: Abstraction has 2331 states and 3787 transitions. [2019-11-06 19:12:00,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:12:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3787 transitions. [2019-11-06 19:12:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-06 19:12:00,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:12:00,386 INFO L410 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, 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] [2019-11-06 19:12:00,386 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:12:00,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:12:00,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1774223795, now seen corresponding path program 1 times [2019-11-06 19:12:00,387 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:12:00,388 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981728117] [2019-11-06 19:12:00,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:12:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:12:00,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981728117] [2019-11-06 19:12:00,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784908535] [2019-11-06 19:12:00,694 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 [2019-11-06 19:12:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:00,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 19:12:00,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:12:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 19:12:00,920 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:12:00,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-11-06 19:12:00,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551999671] [2019-11-06 19:12:00,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:12:00,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:12:00,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:12:00,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:12:00,924 INFO L87 Difference]: Start difference. First operand 2331 states and 3787 transitions. Second operand 8 states.