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/Problem10_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 17:59:05,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 17:59:05,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 17:59:05,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 17:59:05,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 17:59:05,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 17:59:05,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 17:59:05,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 17:59:05,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 17:59:05,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 17:59:05,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 17:59:05,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 17:59:05,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 17:59:05,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 17:59:05,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 17:59:05,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 17:59:05,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 17:59:05,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 17:59:05,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 17:59:05,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 17:59:05,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 17:59:05,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 17:59:05,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 17:59:05,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 17:59:05,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 17:59:05,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 17:59:05,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 17:59:05,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 17:59:05,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 17:59:05,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 17:59:05,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 17:59:05,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 17:59:05,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 17:59:05,726 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 17:59:05,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 17:59:05,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 17:59:05,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 17:59:05,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 17:59:05,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 17:59:05,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 17:59:05,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 17:59:05,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 17:59:05,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 17:59:05,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 17:59:05,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 17:59:05,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 17:59:05,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 17:59:05,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 17:59:05,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 17:59:05,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 17:59:05,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:59:05,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 17:59:05,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 17:59:05,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 17:59:05,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 17:59:05,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 17:59:05,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 17:59:05,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 17:59:06,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 17:59:06,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 17:59:06,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 17:59:06,036 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 17:59:06,036 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 17:59:06,037 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label56.c [2019-10-13 17:59:06,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d059347/17779746262a4d0b9d5a2cc387c87806/FLAG47fe50737 [2019-10-13 17:59:06,720 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 17:59:06,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label56.c [2019-10-13 17:59:06,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d059347/17779746262a4d0b9d5a2cc387c87806/FLAG47fe50737 [2019-10-13 17:59:07,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d059347/17779746262a4d0b9d5a2cc387c87806 [2019-10-13 17:59:07,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 17:59:07,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 17:59:07,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 17:59:07,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 17:59:07,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 17:59:07,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5c0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07, skipping insertion in model container [2019-10-13 17:59:07,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,044 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 17:59:07,096 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 17:59:07,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:59:07,590 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 17:59:07,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:59:07,717 INFO L192 MainTranslator]: Completed translation [2019-10-13 17:59:07,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07 WrapperNode [2019-10-13 17:59:07,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 17:59:07,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 17:59:07,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 17:59:07,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 17:59:07,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... [2019-10-13 17:59:07,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 17:59:07,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 17:59:07,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 17:59:07,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 17:59:07,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:59:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 17:59:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 17:59:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 17:59:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 17:59:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 17:59:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 17:59:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 17:59:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 17:59:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 17:59:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 17:59:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 17:59:09,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 17:59:09,170 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 17:59:09,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:09 BoogieIcfgContainer [2019-10-13 17:59:09,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 17:59:09,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 17:59:09,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 17:59:09,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 17:59:09,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:59:07" (1/3) ... [2019-10-13 17:59:09,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40409658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:09, skipping insertion in model container [2019-10-13 17:59:09,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:07" (2/3) ... [2019-10-13 17:59:09,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40409658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:09, skipping insertion in model container [2019-10-13 17:59:09,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:09" (3/3) ... [2019-10-13 17:59:09,181 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label56.c [2019-10-13 17:59:09,193 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 17:59:09,202 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 17:59:09,214 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 17:59:09,244 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 17:59:09,244 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 17:59:09,244 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 17:59:09,244 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 17:59:09,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 17:59:09,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 17:59:09,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 17:59:09,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 17:59:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-13 17:59:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 17:59:09,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:09,277 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:09,279 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:09,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1758937742, now seen corresponding path program 1 times [2019-10-13 17:59:09,293 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:09,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059718220] [2019-10-13 17:59:09,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:09,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:09,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:09,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059718220] [2019-10-13 17:59:09,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:59:09,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 17:59:09,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338137280] [2019-10-13 17:59:09,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:59:09,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:09,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:59:09,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 17:59:09,617 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2019-10-13 17:59:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:11,819 INFO L93 Difference]: Finished difference Result 730 states and 1300 transitions. [2019-10-13 17:59:11,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 17:59:11,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-13 17:59:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:11,842 INFO L225 Difference]: With dead ends: 730 [2019-10-13 17:59:11,842 INFO L226 Difference]: Without dead ends: 447 [2019-10-13 17:59:11,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 17:59:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-13 17:59:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2019-10-13 17:59:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-13 17:59:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 610 transitions. [2019-10-13 17:59:11,936 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 610 transitions. Word has length 29 [2019-10-13 17:59:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:11,937 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 610 transitions. [2019-10-13 17:59:11,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:59:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 610 transitions. [2019-10-13 17:59:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 17:59:11,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:11,944 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:11,944 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash 30670753, now seen corresponding path program 1 times [2019-10-13 17:59:11,945 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:11,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520492519] [2019-10-13 17:59:11,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:11,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:11,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 17:59:12,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520492519] [2019-10-13 17:59:12,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091918149] [2019-10-13 17:59:12,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:12,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:59:12,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:12,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:59:12,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-13 17:59:12,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985428755] [2019-10-13 17:59:12,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 17:59:12,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 17:59:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:59:12,502 INFO L87 Difference]: Start difference. First operand 443 states and 610 transitions. Second operand 3 states. [2019-10-13 17:59:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:13,128 INFO L93 Difference]: Finished difference Result 880 states and 1232 transitions. [2019-10-13 17:59:13,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 17:59:13,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2019-10-13 17:59:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:13,139 INFO L225 Difference]: With dead ends: 880 [2019-10-13 17:59:13,139 INFO L226 Difference]: Without dead ends: 878 [2019-10-13 17:59:13,141 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:59:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2019-10-13 17:59:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 733. [2019-10-13 17:59:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2019-10-13 17:59:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1056 transitions. [2019-10-13 17:59:13,190 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1056 transitions. Word has length 116 [2019-10-13 17:59:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:13,191 INFO L462 AbstractCegarLoop]: Abstraction has 733 states and 1056 transitions. [2019-10-13 17:59:13,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 17:59:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1056 transitions. [2019-10-13 17:59:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 17:59:13,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:13,209 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:13,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:13,414 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash 662877061, now seen corresponding path program 1 times [2019-10-13 17:59:13,416 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:13,416 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890709225] [2019-10-13 17:59:13,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:13,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:13,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 17:59:13,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890709225] [2019-10-13 17:59:13,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645471907] [2019-10-13 17:59:13,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:13,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:59:13,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 17:59:13,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:59:13,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-13 17:59:13,995 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412987330] [2019-10-13 17:59:13,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 17:59:13,997 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:13,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 17:59:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:59:13,998 INFO L87 Difference]: Start difference. First operand 733 states and 1056 transitions. Second operand 3 states. [2019-10-13 17:59:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:14,740 INFO L93 Difference]: Finished difference Result 2185 states and 3220 transitions. [2019-10-13 17:59:14,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 17:59:14,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-10-13 17:59:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:14,753 INFO L225 Difference]: With dead ends: 2185 [2019-10-13 17:59:14,753 INFO L226 Difference]: Without dead ends: 1458 [2019-10-13 17:59:14,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:59:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2019-10-13 17:59:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2019-10-13 17:59:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2019-10-13 17:59:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1981 transitions. [2019-10-13 17:59:14,806 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1981 transitions. Word has length 206 [2019-10-13 17:59:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:14,807 INFO L462 AbstractCegarLoop]: Abstraction has 1458 states and 1981 transitions. [2019-10-13 17:59:14,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 17:59:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1981 transitions. [2019-10-13 17:59:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 17:59:14,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:14,825 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:15,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:15,035 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 659419793, now seen corresponding path program 1 times [2019-10-13 17:59:15,036 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:15,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337761808] [2019-10-13 17:59:15,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:15,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:15,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 17:59:15,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337761808] [2019-10-13 17:59:15,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726209232] [2019-10-13 17:59:15,493 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 [2019-10-13 17:59:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:15,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:59:15,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:15,667 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:59:15,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 17:59:15,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131320547] [2019-10-13 17:59:15,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 17:59:15,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:15,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 17:59:15,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:59:15,670 INFO L87 Difference]: Start difference. First operand 1458 states and 1981 transitions. Second operand 11 states. [2019-10-13 17:59:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:19,013 INFO L93 Difference]: Finished difference Result 4283 states and 6022 transitions. [2019-10-13 17:59:19,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 17:59:19,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 224 [2019-10-13 17:59:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:19,034 INFO L225 Difference]: With dead ends: 4283 [2019-10-13 17:59:19,034 INFO L226 Difference]: Without dead ends: 2831 [2019-10-13 17:59:19,039 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2019-10-13 17:59:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2019-10-13 17:59:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1788. [2019-10-13 17:59:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2019-10-13 17:59:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2137 transitions. [2019-10-13 17:59:19,130 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2137 transitions. Word has length 224 [2019-10-13 17:59:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:19,131 INFO L462 AbstractCegarLoop]: Abstraction has 1788 states and 2137 transitions. [2019-10-13 17:59:19,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 17:59:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2137 transitions. [2019-10-13 17:59:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 17:59:19,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:19,137 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:19,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:19,342 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1286470258, now seen corresponding path program 1 times [2019-10-13 17:59:19,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:19,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48764044] [2019-10-13 17:59:19,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:19,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:19,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 17:59:19,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48764044] [2019-10-13 17:59:19,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908653769] [2019-10-13 17:59:19,726 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 [2019-10-13 17:59:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:19,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:59:19,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:19,934 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:59:19,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 17:59:19,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657524296] [2019-10-13 17:59:19,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 17:59:19,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:19,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 17:59:19,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:59:19,937 INFO L87 Difference]: Start difference. First operand 1788 states and 2137 transitions. Second operand 11 states. [2019-10-13 17:59:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:23,515 INFO L93 Difference]: Finished difference Result 5675 states and 7577 transitions. [2019-10-13 17:59:23,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 17:59:23,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 235 [2019-10-13 17:59:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:23,535 INFO L225 Difference]: With dead ends: 5675 [2019-10-13 17:59:23,535 INFO L226 Difference]: Without dead ends: 2214 [2019-10-13 17:59:23,547 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2019-10-13 17:59:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2019-10-13 17:59:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2013. [2019-10-13 17:59:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2019-10-13 17:59:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2512 transitions. [2019-10-13 17:59:23,618 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2512 transitions. Word has length 235 [2019-10-13 17:59:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:23,618 INFO L462 AbstractCegarLoop]: Abstraction has 2013 states and 2512 transitions. [2019-10-13 17:59:23,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 17:59:23,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2512 transitions. [2019-10-13 17:59:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2019-10-13 17:59:23,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:23,632 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 17:59:23,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:23,844 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:23,845 INFO L82 PathProgramCache]: Analyzing trace with hash -53702394, now seen corresponding path program 1 times [2019-10-13 17:59:23,846 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:23,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265944081] [2019-10-13 17:59:23,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:23,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:23,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 17:59:24,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265944081] [2019-10-13 17:59:24,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610525332] [2019-10-13 17:59:24,295 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 [2019-10-13 17:59:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:24,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:59:24,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:24,501 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:59:24,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-10-13 17:59:24,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531752965] [2019-10-13 17:59:24,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 17:59:24,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:24,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 17:59:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 17:59:24,504 INFO L87 Difference]: Start difference. First operand 2013 states and 2512 transitions. Second operand 11 states. [2019-10-13 17:59:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:25,952 INFO L93 Difference]: Finished difference Result 4095 states and 5005 transitions. [2019-10-13 17:59:25,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 17:59:25,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 271 [2019-10-13 17:59:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:25,963 INFO L225 Difference]: With dead ends: 4095 [2019-10-13 17:59:25,963 INFO L226 Difference]: Without dead ends: 2128 [2019-10-13 17:59:25,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-10-13 17:59:25,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2019-10-13 17:59:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2076. [2019-10-13 17:59:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2076 states. [2019-10-13 17:59:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2412 transitions. [2019-10-13 17:59:26,023 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2412 transitions. Word has length 271 [2019-10-13 17:59:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:26,024 INFO L462 AbstractCegarLoop]: Abstraction has 2076 states and 2412 transitions. [2019-10-13 17:59:26,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 17:59:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2412 transitions. [2019-10-13 17:59:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-13 17:59:26,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:26,032 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 17:59:26,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:26,235 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:26,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:26,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1512914114, now seen corresponding path program 1 times [2019-10-13 17:59:26,236 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:26,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513559471] [2019-10-13 17:59:26,236 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:26,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:26,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2019-10-13 17:59:26,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513559471] [2019-10-13 17:59:26,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078030635] [2019-10-13 17:59:26,743 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 [2019-10-13 17:59:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:26,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-13 17:59:26,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:27,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:27,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:29,367 WARN L191 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2019-10-13 17:59:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 4 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:29,584 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:59:29,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-10-13 17:59:29,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469572394] [2019-10-13 17:59:29,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 17:59:29,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:29,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 17:59:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-10-13 17:59:29,586 INFO L87 Difference]: Start difference. First operand 2076 states and 2412 transitions. Second operand 17 states. [2019-10-13 17:59:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:34,586 INFO L93 Difference]: Finished difference Result 7702 states and 9480 transitions. [2019-10-13 17:59:34,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-13 17:59:34,586 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 285 [2019-10-13 17:59:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:34,610 INFO L225 Difference]: With dead ends: 7702 [2019-10-13 17:59:34,610 INFO L226 Difference]: Without dead ends: 5481 [2019-10-13 17:59:34,617 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 17:59:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-10-13 17:59:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 3987. [2019-10-13 17:59:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2019-10-13 17:59:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 4795 transitions. [2019-10-13 17:59:34,727 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 4795 transitions. Word has length 285 [2019-10-13 17:59:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:34,727 INFO L462 AbstractCegarLoop]: Abstraction has 3987 states and 4795 transitions. [2019-10-13 17:59:34,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 17:59:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 4795 transitions. [2019-10-13 17:59:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2019-10-13 17:59:34,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:34,739 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 17:59:34,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:34,943 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1287672678, now seen corresponding path program 1 times [2019-10-13 17:59:34,949 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:34,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428070234] [2019-10-13 17:59:34,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:34,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:34,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 17:59:35,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428070234] [2019-10-13 17:59:35,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068962056] [2019-10-13 17:59:35,295 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 [2019-10-13 17:59:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:35,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 17:59:35,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:35,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 17:59:35,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 17:59:35,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-13 17:59:35,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449390578] [2019-10-13 17:59:35,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 17:59:35,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:35,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 17:59:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:59:35,697 INFO L87 Difference]: Start difference. First operand 3987 states and 4795 transitions. Second operand 3 states. [2019-10-13 17:59:36,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:36,349 INFO L93 Difference]: Finished difference Result 8544 states and 10326 transitions. [2019-10-13 17:59:36,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 17:59:36,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2019-10-13 17:59:36,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:36,372 INFO L225 Difference]: With dead ends: 8544 [2019-10-13 17:59:36,372 INFO L226 Difference]: Without dead ends: 4561 [2019-10-13 17:59:36,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 17:59:36,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2019-10-13 17:59:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4418. [2019-10-13 17:59:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4418 states. [2019-10-13 17:59:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 5339 transitions. [2019-10-13 17:59:36,482 INFO L78 Accepts]: Start accepts. Automaton has 4418 states and 5339 transitions. Word has length 343 [2019-10-13 17:59:36,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:36,483 INFO L462 AbstractCegarLoop]: Abstraction has 4418 states and 5339 transitions. [2019-10-13 17:59:36,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 17:59:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4418 states and 5339 transitions. [2019-10-13 17:59:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2019-10-13 17:59:36,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:36,502 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:36,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:36,715 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash 982802905, now seen corresponding path program 1 times [2019-10-13 17:59:36,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:36,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688476868] [2019-10-13 17:59:36,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:36,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:36,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 179 proven. 117 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2019-10-13 17:59:37,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688476868] [2019-10-13 17:59:37,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906752385] [2019-10-13 17:59:37,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:37,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 17:59:37,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 17:59:37,679 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 17:59:37,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13 [2019-10-13 17:59:37,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506365644] [2019-10-13 17:59:37,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 17:59:37,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 17:59:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-13 17:59:37,682 INFO L87 Difference]: Start difference. First operand 4418 states and 5339 transitions. Second operand 13 states. [2019-10-13 17:59:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:40,372 INFO L93 Difference]: Finished difference Result 9132 states and 11015 transitions. [2019-10-13 17:59:40,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 17:59:40,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 422 [2019-10-13 17:59:40,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:40,390 INFO L225 Difference]: With dead ends: 9132 [2019-10-13 17:59:40,390 INFO L226 Difference]: Without dead ends: 4863 [2019-10-13 17:59:40,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2019-10-13 17:59:40,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2019-10-13 17:59:40,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4430. [2019-10-13 17:59:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4430 states. [2019-10-13 17:59:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 5269 transitions. [2019-10-13 17:59:40,493 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 5269 transitions. Word has length 422 [2019-10-13 17:59:40,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:40,494 INFO L462 AbstractCegarLoop]: Abstraction has 4430 states and 5269 transitions. [2019-10-13 17:59:40,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 17:59:40,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 5269 transitions. [2019-10-13 17:59:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2019-10-13 17:59:40,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:40,513 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 17:59:40,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:40,717 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:40,718 INFO L82 PathProgramCache]: Analyzing trace with hash 86359130, now seen corresponding path program 1 times [2019-10-13 17:59:40,718 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:40,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009274343] [2019-10-13 17:59:40,719 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:40,719 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:40,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 101 proven. 270 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2019-10-13 17:59:41,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009274343] [2019-10-13 17:59:41,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592072724] [2019-10-13 17:59:41,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 17:59:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:41,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-13 17:59:41,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 17:59:41,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:41,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 17:59:42,439 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 22