/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/Problem11_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:08:54,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:08:54,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:08:54,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:08:54,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:08:54,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:08:54,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:08:54,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:08:54,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:08:54,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:08:54,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:08:54,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:08:54,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:08:54,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:08:54,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:08:54,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:08:54,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:08:54,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:08:54,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:08:54,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:08:54,766 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 19:08:54,783 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:08:54,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:08:54,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:08:54,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:08:54,786 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:08:54,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:08:54,787 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:08:54,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:08:54,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:08:54,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:08:54,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:08:54,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:08:54,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:08:54,790 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:08:54,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:08:54,790 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:08:54,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:08:54,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:08:54,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:08:54,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:08:54,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:08:54,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:08:54,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:08:54,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:08:54,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:08:54,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:08:54,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:08:54,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:08:54,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:08:55,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:08:55,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:08:55,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:08:55,124 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:08:55,125 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:08:55,125 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27.c [2019-11-06 19:08:55,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d48528a1/65b03d7f31674f8e854ffd2f318bf879/FLAG0390fedbe [2019-11-06 19:08:55,803 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:08:55,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label27.c [2019-11-06 19:08:55,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d48528a1/65b03d7f31674f8e854ffd2f318bf879/FLAG0390fedbe [2019-11-06 19:08:56,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d48528a1/65b03d7f31674f8e854ffd2f318bf879 [2019-11-06 19:08:56,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:08:56,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:08:56,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:08:56,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:08:56,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:08:56,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:56,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0f0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56, skipping insertion in model container [2019-11-06 19:08:56,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:56,085 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:08:56,164 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:08:56,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:08:56,734 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:08:56,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:08:56,980 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:08:56,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56 WrapperNode [2019-11-06 19:08:56,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:08:56,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:08:56,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:08:56,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:08:57,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (1/1) ... [2019-11-06 19:08:57,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:08:57,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:08:57,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:08:57,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:08:57,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (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 19:08:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:08:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:08:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:08:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:08:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:08:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:08:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:08:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:08:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:08:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:08:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:08:59,072 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:08:59,072 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:08:59,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:08:59 BoogieIcfgContainer [2019-11-06 19:08:59,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:08:59,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:08:59,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:08:59,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:08:59,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:08:56" (1/3) ... [2019-11-06 19:08:59,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2d0772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:08:59, skipping insertion in model container [2019-11-06 19:08:59,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:56" (2/3) ... [2019-11-06 19:08:59,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2d0772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:08:59, skipping insertion in model container [2019-11-06 19:08:59,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:08:59" (3/3) ... [2019-11-06 19:08:59,083 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label27.c [2019-11-06 19:08:59,092 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:08:59,100 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:08:59,113 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:08:59,178 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:08:59,178 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:08:59,178 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:08:59,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:08:59,179 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:08:59,179 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:08:59,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:08:59,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:08:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-11-06 19:08:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-06 19:08:59,212 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:08:59,213 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] [2019-11-06 19:08:59,215 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:08:59,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:08:59,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1647483275, now seen corresponding path program 1 times [2019-11-06 19:08:59,229 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:08:59,230 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423840192] [2019-11-06 19:08:59,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:08:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:59,610 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 19:08:59,613 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423840192] [2019-11-06 19:08:59,614 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:08:59,614 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:08:59,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311426049] [2019-11-06 19:08:59,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:08:59,624 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:08:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:08:59,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:08:59,641 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-11-06 19:09:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:03,047 INFO L93 Difference]: Finished difference Result 1005 states and 1792 transitions. [2019-11-06 19:09:03,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:09:03,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-11-06 19:09:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:03,083 INFO L225 Difference]: With dead ends: 1005 [2019-11-06 19:09:03,084 INFO L226 Difference]: Without dead ends: 629 [2019-11-06 19:09:03,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-06 19:09:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 424. [2019-11-06 19:09:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-11-06 19:09:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 609 transitions. [2019-11-06 19:09:03,217 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 609 transitions. Word has length 48 [2019-11-06 19:09:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:03,218 INFO L462 AbstractCegarLoop]: Abstraction has 424 states and 609 transitions. [2019-11-06 19:09:03,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:09:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 609 transitions. [2019-11-06 19:09:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 19:09:03,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:03,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:03,225 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2032953802, now seen corresponding path program 1 times [2019-11-06 19:09:03,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:03,226 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189468238] [2019-11-06 19:09:03,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:03,542 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189468238] [2019-11-06 19:09:03,542 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:09:03,543 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:09:03,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452508372] [2019-11-06 19:09:03,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:09:03,548 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:09:03,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:09:03,550 INFO L87 Difference]: Start difference. First operand 424 states and 609 transitions. Second operand 9 states. [2019-11-06 19:09:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:06,739 INFO L93 Difference]: Finished difference Result 1645 states and 2450 transitions. [2019-11-06 19:09:06,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 19:09:06,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2019-11-06 19:09:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:06,749 INFO L225 Difference]: With dead ends: 1645 [2019-11-06 19:09:06,749 INFO L226 Difference]: Without dead ends: 1227 [2019-11-06 19:09:06,752 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:09:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2019-11-06 19:09:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1198. [2019-11-06 19:09:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-11-06 19:09:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1680 transitions. [2019-11-06 19:09:06,806 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1680 transitions. Word has length 120 [2019-11-06 19:09:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:06,807 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1680 transitions. [2019-11-06 19:09:06,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:09:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1680 transitions. [2019-11-06 19:09:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 19:09:06,811 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:06,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:06,811 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash 758583974, now seen corresponding path program 1 times [2019-11-06 19:09:06,812 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:06,812 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918269484] [2019-11-06 19:09:06,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:07,025 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918269484] [2019-11-06 19:09:07,026 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869127062] [2019-11-06 19:09:07,026 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 19:09:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:07,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:07,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:07,205 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:07,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:09:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343013984] [2019-11-06 19:09:07,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:07,216 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:07,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:07,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:07,217 INFO L87 Difference]: Start difference. First operand 1198 states and 1680 transitions. Second operand 3 states. [2019-11-06 19:09:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:08,348 INFO L93 Difference]: Finished difference Result 2782 states and 3940 transitions. [2019-11-06 19:09:08,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:08,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-11-06 19:09:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:08,366 INFO L225 Difference]: With dead ends: 2782 [2019-11-06 19:09:08,366 INFO L226 Difference]: Without dead ends: 1590 [2019-11-06 19:09:08,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2019-11-06 19:09:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1581. [2019-11-06 19:09:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2019-11-06 19:09:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2221 transitions. [2019-11-06 19:09:08,461 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2221 transitions. Word has length 122 [2019-11-06 19:09:08,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:08,464 INFO L462 AbstractCegarLoop]: Abstraction has 1581 states and 2221 transitions. [2019-11-06 19:09:08,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2221 transitions. [2019-11-06 19:09:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 19:09:08,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:08,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:08,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:08,677 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:08,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1062949639, now seen corresponding path program 1 times [2019-11-06 19:09:08,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:08,678 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551527291] [2019-11-06 19:09:08,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:08,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551527291] [2019-11-06 19:09:08,956 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:09:08,957 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 19:09:08,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746182374] [2019-11-06 19:09:08,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 19:09:08,958 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:08,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 19:09:08,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:08,959 INFO L87 Difference]: Start difference. First operand 1581 states and 2221 transitions. Second operand 7 states. [2019-11-06 19:09:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:11,487 INFO L93 Difference]: Finished difference Result 4769 states and 7030 transitions. [2019-11-06 19:09:11,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 19:09:11,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-11-06 19:09:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:11,509 INFO L225 Difference]: With dead ends: 4769 [2019-11-06 19:09:11,509 INFO L226 Difference]: Without dead ends: 3194 [2019-11-06 19:09:11,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:09:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2019-11-06 19:09:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2582. [2019-11-06 19:09:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2019-11-06 19:09:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3506 transitions. [2019-11-06 19:09:11,621 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3506 transitions. Word has length 123 [2019-11-06 19:09:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:11,622 INFO L462 AbstractCegarLoop]: Abstraction has 2582 states and 3506 transitions. [2019-11-06 19:09:11,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 19:09:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3506 transitions. [2019-11-06 19:09:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-06 19:09:11,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:11,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:11,628 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash 669937364, now seen corresponding path program 1 times [2019-11-06 19:09:11,629 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:11,629 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396728483] [2019-11-06 19:09:11,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:11,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396728483] [2019-11-06 19:09:11,971 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870208267] [2019-11-06 19:09:11,971 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 [2019-11-06 19:09:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:12,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:12,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:12,195 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:12,195 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2019-11-06 19:09:12,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415971567] [2019-11-06 19:09:12,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:12,197 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:12,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:12,198 INFO L87 Difference]: Start difference. First operand 2582 states and 3506 transitions. Second operand 3 states. [2019-11-06 19:09:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:13,317 INFO L93 Difference]: Finished difference Result 6527 states and 9114 transitions. [2019-11-06 19:09:13,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:13,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-11-06 19:09:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:13,340 INFO L225 Difference]: With dead ends: 6527 [2019-11-06 19:09:13,340 INFO L226 Difference]: Without dead ends: 3951 [2019-11-06 19:09:13,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:09:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2019-11-06 19:09:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3946. [2019-11-06 19:09:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3946 states. [2019-11-06 19:09:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 5383 transitions. [2019-11-06 19:09:13,458 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 5383 transitions. Word has length 179 [2019-11-06 19:09:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:13,459 INFO L462 AbstractCegarLoop]: Abstraction has 3946 states and 5383 transitions. [2019-11-06 19:09:13,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 5383 transitions. [2019-11-06 19:09:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-06 19:09:13,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:13,464 INFO L410 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, 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] [2019-11-06 19:09:13,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:13,668 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:13,668 INFO L82 PathProgramCache]: Analyzing trace with hash -935815360, now seen corresponding path program 1 times [2019-11-06 19:09:13,669 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:13,669 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118631460] [2019-11-06 19:09:13,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:09:14,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118631460] [2019-11-06 19:09:14,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210610545] [2019-11-06 19:09:14,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:14,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:14,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-06 19:09:14,194 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:14,194 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 19:09:14,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970012413] [2019-11-06 19:09:14,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:14,195 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:09:14,203 INFO L87 Difference]: Start difference. First operand 3946 states and 5383 transitions. Second operand 3 states. [2019-11-06 19:09:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:15,301 INFO L93 Difference]: Finished difference Result 7895 states and 10813 transitions. [2019-11-06 19:09:15,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:15,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-11-06 19:09:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:15,323 INFO L225 Difference]: With dead ends: 7895 [2019-11-06 19:09:15,324 INFO L226 Difference]: Without dead ends: 3955 [2019-11-06 19:09:15,335 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:09:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2019-11-06 19:09:15,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3942. [2019-11-06 19:09:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2019-11-06 19:09:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5187 transitions. [2019-11-06 19:09:15,495 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5187 transitions. Word has length 191 [2019-11-06 19:09:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:15,496 INFO L462 AbstractCegarLoop]: Abstraction has 3942 states and 5187 transitions. [2019-11-06 19:09:15,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5187 transitions. [2019-11-06 19:09:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-06 19:09:15,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:15,501 INFO L410 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, 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] [2019-11-06 19:09:15,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:15,706 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1046680151, now seen corresponding path program 1 times [2019-11-06 19:09:15,707 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:15,708 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705408061] [2019-11-06 19:09:15,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:09:16,023 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705408061] [2019-11-06 19:09:16,023 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103254501] [2019-11-06 19:09:16,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:16,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:16,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-06 19:09:16,182 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:16,182 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 19:09:16,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63137218] [2019-11-06 19:09:16,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:16,186 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:16,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:16,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:09:16,187 INFO L87 Difference]: Start difference. First operand 3942 states and 5187 transitions. Second operand 3 states. [2019-11-06 19:09:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:17,549 INFO L93 Difference]: Finished difference Result 10166 states and 13770 transitions. [2019-11-06 19:09:17,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:17,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-11-06 19:09:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:17,577 INFO L225 Difference]: With dead ends: 10166 [2019-11-06 19:09:17,578 INFO L226 Difference]: Without dead ends: 6230 [2019-11-06 19:09:17,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:09:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2019-11-06 19:09:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6228. [2019-11-06 19:09:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2019-11-06 19:09:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8045 transitions. [2019-11-06 19:09:17,729 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8045 transitions. Word has length 204 [2019-11-06 19:09:17,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:17,730 INFO L462 AbstractCegarLoop]: Abstraction has 6228 states and 8045 transitions. [2019-11-06 19:09:17,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8045 transitions. [2019-11-06 19:09:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-06 19:09:17,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:17,735 INFO L410 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, 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] [2019-11-06 19:09:17,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:17,939 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1919024346, now seen corresponding path program 1 times [2019-11-06 19:09:17,939 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:17,940 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101080728] [2019-11-06 19:09:17,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:09:18,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101080728] [2019-11-06 19:09:18,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561160204] [2019-11-06 19:09:18,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:18,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:18,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:09:18,373 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:18,373 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2019-11-06 19:09:18,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468824519] [2019-11-06 19:09:18,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:18,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:18,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:18,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:09:18,377 INFO L87 Difference]: Start difference. First operand 6228 states and 8045 transitions. Second operand 3 states. [2019-11-06 19:09:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:19,640 INFO L93 Difference]: Finished difference Result 14922 states and 19845 transitions. [2019-11-06 19:09:19,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:19,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-11-06 19:09:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:19,676 INFO L225 Difference]: With dead ends: 14922 [2019-11-06 19:09:19,676 INFO L226 Difference]: Without dead ends: 8700 [2019-11-06 19:09:19,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:09:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2019-11-06 19:09:19,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 8324. [2019-11-06 19:09:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8324 states. [2019-11-06 19:09:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8324 states to 8324 states and 10737 transitions. [2019-11-06 19:09:19,885 INFO L78 Accepts]: Start accepts. Automaton has 8324 states and 10737 transitions. Word has length 209 [2019-11-06 19:09:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:19,885 INFO L462 AbstractCegarLoop]: Abstraction has 8324 states and 10737 transitions. [2019-11-06 19:09:19,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 8324 states and 10737 transitions. [2019-11-06 19:09:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-06 19:09:19,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:19,894 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:20,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:20,101 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash 259131254, now seen corresponding path program 1 times [2019-11-06 19:09:20,102 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:20,102 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494707323] [2019-11-06 19:09:20,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-06 19:09:20,337 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494707323] [2019-11-06 19:09:20,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065159038] [2019-11-06 19:09:20,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:20,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:09:20,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-06 19:09:20,550 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:09:20,550 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-11-06 19:09:20,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558412221] [2019-11-06 19:09:20,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:09:20,551 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:09:20,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:09:20,552 INFO L87 Difference]: Start difference. First operand 8324 states and 10737 transitions. Second operand 3 states. [2019-11-06 19:09:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:09:21,787 INFO L93 Difference]: Finished difference Result 17783 states and 23283 transitions. [2019-11-06 19:09:21,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:09:21,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-11-06 19:09:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:09:21,826 INFO L225 Difference]: With dead ends: 17783 [2019-11-06 19:09:21,826 INFO L226 Difference]: Without dead ends: 9465 [2019-11-06 19:09:21,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 242 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:09:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9465 states. [2019-11-06 19:09:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9465 to 9465. [2019-11-06 19:09:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9465 states. [2019-11-06 19:09:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 12231 transitions. [2019-11-06 19:09:22,092 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 12231 transitions. Word has length 237 [2019-11-06 19:09:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:09:22,093 INFO L462 AbstractCegarLoop]: Abstraction has 9465 states and 12231 transitions. [2019-11-06 19:09:22,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:09:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 12231 transitions. [2019-11-06 19:09:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-11-06 19:09:22,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:09:22,104 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:09:22,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:22,316 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:09:22,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:09:22,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1903102919, now seen corresponding path program 1 times [2019-11-06 19:09:22,317 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:09:22,317 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888136387] [2019-11-06 19:09:22,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:09:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:09:22,836 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888136387] [2019-11-06 19:09:22,837 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555534049] [2019-11-06 19:09:22,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:09:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:09:22,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-06 19:09:23,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:09:23,221 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2019-11-06 19:09:23,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:23,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:23,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:09:23,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:23,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:23,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:09:23,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:23,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:09:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:09:23,515 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:09:23,515 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-06 19:09:23,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064891624] [2019-11-06 19:09:23,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 19:09:23,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:09:23,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 19:09:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:09:23,517 INFO L87 Difference]: Start difference. First operand 9465 states and 12231 transitions. Second operand 13 states. [2019-11-06 19:09:27,861 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-11-06 19:09:28,421 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67