/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/Problem03_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:01:01,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:01:01,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:01:01,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:01:01,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:01:01,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:01:01,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:01:01,625 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 19:01:01,656 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:01:01,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:01:01,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:01:01,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:01:01,661 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:01:01,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:01:01,662 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:01:01,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:01:01,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:01:01,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:01:01,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:01:01,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:01:01,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:01:01,663 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:01:01,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:01:01,663 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:01:01,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:01:01,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:01:01,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:01:01,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:01:01,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:01:01,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:01:01,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:01:01,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:01:01,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:01:01,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:01:01,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:01:01,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:01:01,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:01:01,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:01:01,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:01:01,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:01:01,978 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:01:01,978 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:01:01,979 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2019-11-06 19:01:02,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ff2a4c8/14d59a99b8f0493e831b92af9d907dcf/FLAG83cff3025 [2019-11-06 19:01:02,718 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:01:02,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2019-11-06 19:01:02,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ff2a4c8/14d59a99b8f0493e831b92af9d907dcf/FLAG83cff3025 [2019-11-06 19:01:02,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ff2a4c8/14d59a99b8f0493e831b92af9d907dcf [2019-11-06 19:01:02,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:01:02,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:01:02,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:01:02,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:01:02,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:01:02,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:02" (1/1) ... [2019-11-06 19:01:02,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e733c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:02, skipping insertion in model container [2019-11-06 19:01:02,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:02" (1/1) ... [2019-11-06 19:01:02,893 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:01:02,979 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:01:03,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:01:03,876 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:01:04,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:01:04,151 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:01:04,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04 WrapperNode [2019-11-06 19:01:04,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:01:04,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:01:04,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:01:04,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:01:04,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (1/1) ... [2019-11-06 19:01:04,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:01:04,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:01:04,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:01:04,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:01:04,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (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 19:01:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:01:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:01:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:01:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:01:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:01:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:01:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:01:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:01:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:01:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:01:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:01:06,559 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:01:06,559 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:01:06,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:06 BoogieIcfgContainer [2019-11-06 19:01:06,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:01:06,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:01:06,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:01:06,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:01:06,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:01:02" (1/3) ... [2019-11-06 19:01:06,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1a337e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:06, skipping insertion in model container [2019-11-06 19:01:06,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:04" (2/3) ... [2019-11-06 19:01:06,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1a337e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:06, skipping insertion in model container [2019-11-06 19:01:06,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:06" (3/3) ... [2019-11-06 19:01:06,570 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label39.c [2019-11-06 19:01:06,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:01:06,589 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:01:06,601 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:01:06,636 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:01:06,637 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:01:06,637 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:01:06,637 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:01:06,637 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:01:06,637 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:01:06,637 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:01:06,638 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:01:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-11-06 19:01:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-06 19:01:06,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:06,685 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, 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, 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 19:01:06,687 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:06,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:06,694 INFO L82 PathProgramCache]: Analyzing trace with hash -986634456, now seen corresponding path program 1 times [2019-11-06 19:01:06,706 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:06,706 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932831041] [2019-11-06 19:01:06,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:07,490 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:07,632 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 19:01:07,633 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932831041] [2019-11-06 19:01:07,634 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:07,634 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:01:07,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235227902] [2019-11-06 19:01:07,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:01:07,642 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:07,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:01:07,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:01:07,660 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2019-11-06 19:01:07,914 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:08,421 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-11-06 19:01:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:12,044 INFO L93 Difference]: Finished difference Result 1121 states and 2001 transitions. [2019-11-06 19:01:12,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:01:12,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-11-06 19:01:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:12,080 INFO L225 Difference]: With dead ends: 1121 [2019-11-06 19:01:12,081 INFO L226 Difference]: Without dead ends: 712 [2019-11-06 19:01:12,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:01:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-11-06 19:01:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 469. [2019-11-06 19:01:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-11-06 19:01:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 753 transitions. [2019-11-06 19:01:12,182 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 753 transitions. Word has length 153 [2019-11-06 19:01:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:12,183 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 753 transitions. [2019-11-06 19:01:12,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:01:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 753 transitions. [2019-11-06 19:01:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-06 19:01:12,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:12,190 INFO L410 BasicCegarLoop]: trace histogram [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, 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, 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 19:01:12,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1704163947, now seen corresponding path program 1 times [2019-11-06 19:01:12,191 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:12,191 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269064781] [2019-11-06 19:01:12,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:12,483 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:12,682 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269064781] [2019-11-06 19:01:12,683 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:12,683 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:01:12,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940755098] [2019-11-06 19:01:12,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:01:12,688 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:12,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:01:12,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:01:12,689 INFO L87 Difference]: Start difference. First operand 469 states and 753 transitions. Second operand 8 states. [2019-11-06 19:01:12,849 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:15,715 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-11-06 19:01:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:16,297 INFO L93 Difference]: Finished difference Result 1416 states and 2361 transitions. [2019-11-06 19:01:16,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 19:01:16,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2019-11-06 19:01:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:16,309 INFO L225 Difference]: With dead ends: 1416 [2019-11-06 19:01:16,309 INFO L226 Difference]: Without dead ends: 953 [2019-11-06 19:01:16,312 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:01:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2019-11-06 19:01:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 908. [2019-11-06 19:01:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2019-11-06 19:01:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1448 transitions. [2019-11-06 19:01:16,428 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1448 transitions. Word has length 162 [2019-11-06 19:01:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:16,430 INFO L462 AbstractCegarLoop]: Abstraction has 908 states and 1448 transitions. [2019-11-06 19:01:16,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:01:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1448 transitions. [2019-11-06 19:01:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-06 19:01:16,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:16,450 INFO L410 BasicCegarLoop]: trace histogram [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, 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, 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 19:01:16,450 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:16,451 INFO L82 PathProgramCache]: Analyzing trace with hash 198136689, now seen corresponding path program 1 times [2019-11-06 19:01:16,451 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:16,451 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174538754] [2019-11-06 19:01:16,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:16,780 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174538754] [2019-11-06 19:01:16,780 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:16,781 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:01:16,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328592672] [2019-11-06 19:01:16,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:01:16,783 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:01:16,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:01:16,788 INFO L87 Difference]: Start difference. First operand 908 states and 1448 transitions. Second operand 8 states. [2019-11-06 19:01:16,952 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:17,275 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:17,685 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-11-06 19:01:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:21,426 INFO L93 Difference]: Finished difference Result 3571 states and 5951 transitions. [2019-11-06 19:01:21,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:01:21,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2019-11-06 19:01:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:21,444 INFO L225 Difference]: With dead ends: 3571 [2019-11-06 19:01:21,445 INFO L226 Difference]: Without dead ends: 2669 [2019-11-06 19:01:21,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-11-06 19:01:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2019-11-06 19:01:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2636. [2019-11-06 19:01:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2636 states. [2019-11-06 19:01:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 4002 transitions. [2019-11-06 19:01:21,565 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 4002 transitions. Word has length 163 [2019-11-06 19:01:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:21,566 INFO L462 AbstractCegarLoop]: Abstraction has 2636 states and 4002 transitions. [2019-11-06 19:01:21,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:01:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 4002 transitions. [2019-11-06 19:01:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-06 19:01:21,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:21,575 INFO L410 BasicCegarLoop]: trace histogram [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, 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, 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 19:01:21,576 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:21,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1802668228, now seen corresponding path program 1 times [2019-11-06 19:01:21,576 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:21,577 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61440036] [2019-11-06 19:01:21,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:21,940 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:22,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61440036] [2019-11-06 19:01:22,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562240132] [2019-11-06 19:01:22,195 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 19:01:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:22,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:01:22,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:01:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:22,685 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:01:22,685 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2019-11-06 19:01:22,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154873228] [2019-11-06 19:01:22,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:01:22,687 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:22,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:01:22,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:01:22,688 INFO L87 Difference]: Start difference. First operand 2636 states and 4002 transitions. Second operand 3 states. [2019-11-06 19:01:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:23,879 INFO L93 Difference]: Finished difference Result 7809 states and 12187 transitions. [2019-11-06 19:01:23,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:01:23,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-06 19:01:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:23,914 INFO L225 Difference]: With dead ends: 7809 [2019-11-06 19:01:23,914 INFO L226 Difference]: Without dead ends: 5179 [2019-11-06 19:01:23,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:01:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2019-11-06 19:01:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 5176. [2019-11-06 19:01:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5176 states. [2019-11-06 19:01:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7196 transitions. [2019-11-06 19:01:24,122 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7196 transitions. Word has length 165 [2019-11-06 19:01:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:24,124 INFO L462 AbstractCegarLoop]: Abstraction has 5176 states and 7196 transitions. [2019-11-06 19:01:24,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:01:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7196 transitions. [2019-11-06 19:01:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 19:01:24,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:24,138 INFO L410 BasicCegarLoop]: trace histogram [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, 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, 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 19:01:24,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:01:24,344 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:24,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:24,345 INFO L82 PathProgramCache]: Analyzing trace with hash -531391768, now seen corresponding path program 1 times [2019-11-06 19:01:24,345 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:24,345 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387692799] [2019-11-06 19:01:24,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:24,579 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:24,722 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-11-06 19:01:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:24,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387692799] [2019-11-06 19:01:24,970 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:24,971 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:01:24,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57393561] [2019-11-06 19:01:24,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:01:24,972 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:01:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:01:24,973 INFO L87 Difference]: Start difference. First operand 5176 states and 7196 transitions. Second operand 9 states. [2019-11-06 19:01:25,217 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:28,947 INFO L93 Difference]: Finished difference Result 15753 states and 24222 transitions. [2019-11-06 19:01:28,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 19:01:28,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2019-11-06 19:01:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:29,028 INFO L225 Difference]: With dead ends: 15753 [2019-11-06 19:01:29,028 INFO L226 Difference]: Without dead ends: 10583 [2019-11-06 19:01:29,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:01:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2019-11-06 19:01:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 10365. [2019-11-06 19:01:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10365 states. [2019-11-06 19:01:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 14901 transitions. [2019-11-06 19:01:29,497 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 14901 transitions. Word has length 171 [2019-11-06 19:01:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:29,498 INFO L462 AbstractCegarLoop]: Abstraction has 10365 states and 14901 transitions. [2019-11-06 19:01:29,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:01:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 14901 transitions. [2019-11-06 19:01:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-06 19:01:29,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:29,524 INFO L410 BasicCegarLoop]: trace histogram [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, 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, 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 19:01:29,525 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash -15837281, now seen corresponding path program 1 times [2019-11-06 19:01:29,525 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:29,526 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116644955] [2019-11-06 19:01:29,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:29,750 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:29,974 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116644955] [2019-11-06 19:01:29,975 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:29,975 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:01:29,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508765155] [2019-11-06 19:01:29,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:01:29,976 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:01:29,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:01:29,984 INFO L87 Difference]: Start difference. First operand 10365 states and 14901 transitions. Second operand 9 states. [2019-11-06 19:01:30,138 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:30,839 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:31,204 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-11-06 19:01:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:34,748 INFO L93 Difference]: Finished difference Result 39612 states and 60962 transitions. [2019-11-06 19:01:34,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:01:34,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2019-11-06 19:01:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:34,937 INFO L225 Difference]: With dead ends: 39612 [2019-11-06 19:01:34,938 INFO L226 Difference]: Without dead ends: 29253 [2019-11-06 19:01:35,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:01:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29253 states. [2019-11-06 19:01:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29253 to 29043. [2019-11-06 19:01:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29043 states.