/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:29:08,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:29:08,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:29:08,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:29:08,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:29:08,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:29:08,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:29:08,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:29:08,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:29:08,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:29:08,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:29:08,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:29:08,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:29:08,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:29:08,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:29:08,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:29:08,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:29:08,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:29:08,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:29:08,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:29:08,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:29:08,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:29:08,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:29:08,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:29:08,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:29:08,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:29:08,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:29:08,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:29:08,501 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 [2020-07-20 05:29:08,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:29:08,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:29:08,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:29:08,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:29:08,535 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:29:08,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:29:08,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:29:08,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:29:08,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:29:08,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:29:08,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:29:08,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:29:08,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:29:08,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:29:08,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:29:08,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:29:08,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:29:08,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:29:08,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:29:08,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:29:08,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:29:08,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:29:08,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:29:08,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:29:08,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:29:08,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:29:08,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:29:08,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:29:08,818 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:29:08,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-20 05:29:08,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c024773b6/7e6f269fc57d4eb8b47cef87e0dd9a26/FLAGcc10be0ec [2020-07-20 05:29:09,379 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:29:09,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-20 05:29:09,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c024773b6/7e6f269fc57d4eb8b47cef87e0dd9a26/FLAGcc10be0ec [2020-07-20 05:29:09,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c024773b6/7e6f269fc57d4eb8b47cef87e0dd9a26 [2020-07-20 05:29:09,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:29:09,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:29:09,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:29:09,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:29:09,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:29:09,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235b9204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09, skipping insertion in model container [2020-07-20 05:29:09,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:29:09,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:29:09,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:29:09,940 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:29:09,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:29:09,970 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:29:09,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09 WrapperNode [2020-07-20 05:29:09,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:29:09,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:29:09,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:29:09,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:29:09,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (1/1) ... [2020-07-20 05:29:09,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:29:09,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:29:09,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:29:09,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:29:09,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (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 [2020-07-20 05:29:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:29:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:29:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-20 05:29:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:29:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:29:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:29:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-20 05:29:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:29:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:29:10,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:29:10,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:29:10,338 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:29:10,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:10 BoogieIcfgContainer [2020-07-20 05:29:10,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:29:10,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:29:10,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:29:10,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:29:10,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:29:09" (1/3) ... [2020-07-20 05:29:10,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5367b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:10, skipping insertion in model container [2020-07-20 05:29:10,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:09" (2/3) ... [2020-07-20 05:29:10,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5367b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:10, skipping insertion in model container [2020-07-20 05:29:10,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:10" (3/3) ... [2020-07-20 05:29:10,351 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-07-20 05:29:10,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:29:10,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:29:10,386 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:29:10,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:29:10,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:29:10,417 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:29:10,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:29:10,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:29:10,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:29:10,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:29:10,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:29:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 05:29:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 05:29:10,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:10,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:10,464 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:10,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-07-20 05:29:10,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:10,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407160987] [2020-07-20 05:29:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:29:10,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407160987] [2020-07-20 05:29:10,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:10,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:29:10,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499918741] [2020-07-20 05:29:10,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:29:10,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:10,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:29:10,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:29:10,740 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 05:29:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:10,856 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-20 05:29:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:29:10,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 05:29:10,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:10,869 INFO L225 Difference]: With dead ends: 36 [2020-07-20 05:29:10,870 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 05:29:10,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:29:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 05:29:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 05:29:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 05:29:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-07-20 05:29:10,921 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-07-20 05:29:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:10,921 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-07-20 05:29:10,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:29:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-20 05:29:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:29:10,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:10,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:10,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:29:10,925 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-07-20 05:29:10,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:10,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132301891] [2020-07-20 05:29:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:29:11,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132301891] [2020-07-20 05:29:11,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:11,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:29:11,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318117681] [2020-07-20 05:29:11,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:29:11,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:11,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:29:11,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:29:11,011 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-07-20 05:29:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:11,048 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-07-20 05:29:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:29:11,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-20 05:29:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:11,050 INFO L225 Difference]: With dead ends: 32 [2020-07-20 05:29:11,050 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 05:29:11,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:29:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 05:29:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 05:29:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 05:29:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 05:29:11,061 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-20 05:29:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:11,061 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 05:29:11,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:29:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 05:29:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 05:29:11,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:11,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:11,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:29:11,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-07-20 05:29:11,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:11,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038792028] [2020-07-20 05:29:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 05:29:11,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038792028] [2020-07-20 05:29:11,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510039280] [2020-07-20 05:29:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d370878 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 [2020-07-20 05:29:11,237 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d370878 issued 2 check-sat command(s) [2020-07-20 05:29:11,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:11,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 05:29:11,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 05:29:11,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:11,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 05:29:11,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748502025] [2020-07-20 05:29:11,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 05:29:11,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:11,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 05:29:11,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:29:11,314 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-07-20 05:29:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:11,463 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2020-07-20 05:29:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 05:29:11,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-07-20 05:29:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:11,466 INFO L225 Difference]: With dead ends: 52 [2020-07-20 05:29:11,466 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 05:29:11,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-07-20 05:29:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 05:29:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-20 05:29:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 05:29:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-07-20 05:29:11,478 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 20 [2020-07-20 05:29:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:11,478 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-20 05:29:11,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 05:29:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-07-20 05:29:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 05:29:11,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:11,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:11,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 05:29:11,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:11,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-07-20 05:29:11,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:11,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186396154] [2020-07-20 05:29:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 05:29:11,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186396154] [2020-07-20 05:29:11,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046215615] [2020-07-20 05:29:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d29182d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:11,959 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d29182d issued 2 check-sat command(s) [2020-07-20 05:29:11,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:11,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 05:29:11,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 05:29:12,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:12,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-20 05:29:12,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067456836] [2020-07-20 05:29:12,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 05:29:12,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 05:29:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:12,018 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 9 states. [2020-07-20 05:29:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:12,194 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-07-20 05:29:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 05:29:12,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-20 05:29:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:12,197 INFO L225 Difference]: With dead ends: 41 [2020-07-20 05:29:12,198 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 05:29:12,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:29:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 05:29:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-20 05:29:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 05:29:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-07-20 05:29:12,215 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 27 [2020-07-20 05:29:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:12,216 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-07-20 05:29:12,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 05:29:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-07-20 05:29:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 05:29:12,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:12,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:12,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:12,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:12,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-07-20 05:29:12,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:12,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825346039] [2020-07-20 05:29:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-20 05:29:12,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825346039] [2020-07-20 05:29:12,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867548408] [2020-07-20 05:29:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@61eea907 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 [2020-07-20 05:29:12,626 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@61eea907 issued 2 check-sat command(s) [2020-07-20 05:29:12,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:12,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 05:29:12,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-20 05:29:12,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:12,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 05:29:12,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868602929] [2020-07-20 05:29:12,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 05:29:12,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:12,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 05:29:12,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-20 05:29:12,671 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 10 states. [2020-07-20 05:29:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:12,846 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-07-20 05:29:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 05:29:12,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-20 05:29:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:12,849 INFO L225 Difference]: With dead ends: 44 [2020-07-20 05:29:12,849 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 05:29:12,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-20 05:29:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 05:29:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-07-20 05:29:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 05:29:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-20 05:29:12,858 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 34 [2020-07-20 05:29:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:12,859 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-20 05:29:12,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 05:29:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-20 05:29:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 05:29:12,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:12,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:13,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:13,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-07-20 05:29:13,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:13,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469628345] [2020-07-20 05:29:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-20 05:29:13,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469628345] [2020-07-20 05:29:13,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848010472] [2020-07-20 05:29:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2847d579 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:13,388 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2847d579 issued 2 check-sat command(s) [2020-07-20 05:29:13,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:13,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 05:29:13,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-20 05:29:13,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:13,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-20 05:29:13,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252132907] [2020-07-20 05:29:13,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 05:29:13,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 05:29:13,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-20 05:29:13,449 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 11 states. [2020-07-20 05:29:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:13,604 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-07-20 05:29:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 05:29:13,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-07-20 05:29:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:13,606 INFO L225 Difference]: With dead ends: 47 [2020-07-20 05:29:13,606 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 05:29:13,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-07-20 05:29:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 05:29:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-20 05:29:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 05:29:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 05:29:13,615 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 41 [2020-07-20 05:29:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:13,615 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 05:29:13,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 05:29:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 05:29:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 05:29:13,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:13,617 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:13,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:13,818 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:13,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:13,818 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-07-20 05:29:13,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:13,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260387804] [2020-07-20 05:29:13,819 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-20 05:29:14,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260387804] [2020-07-20 05:29:14,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272913484] [2020-07-20 05:29:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66d090f 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 [2020-07-20 05:29:14,070 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66d090f issued 2 check-sat command(s) [2020-07-20 05:29:14,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:14,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 05:29:14,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-20 05:29:14,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:14,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-07-20 05:29:14,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027109483] [2020-07-20 05:29:14,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 05:29:14,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:14,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 05:29:14,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-20 05:29:14,118 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 12 states. [2020-07-20 05:29:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:14,296 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-07-20 05:29:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 05:29:14,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-07-20 05:29:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:14,299 INFO L225 Difference]: With dead ends: 50 [2020-07-20 05:29:14,299 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 05:29:14,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-07-20 05:29:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 05:29:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-20 05:29:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 05:29:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-07-20 05:29:14,307 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 48 [2020-07-20 05:29:14,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:14,308 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-07-20 05:29:14,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 05:29:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-20 05:29:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 05:29:14,310 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:14,310 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:14,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-20 05:29:14,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-07-20 05:29:14,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:14,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319668175] [2020-07-20 05:29:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-20 05:29:14,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319668175] [2020-07-20 05:29:14,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60953479] [2020-07-20 05:29:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10a6fe8f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:14,765 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10a6fe8f issued 2 check-sat command(s) [2020-07-20 05:29:14,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:14,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 05:29:14,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-20 05:29:14,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:14,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-20 05:29:14,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750422089] [2020-07-20 05:29:14,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 05:29:14,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 05:29:14,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:29:14,814 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2020-07-20 05:29:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:15,025 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-07-20 05:29:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 05:29:15,027 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-07-20 05:29:15,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:15,028 INFO L225 Difference]: With dead ends: 53 [2020-07-20 05:29:15,028 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 05:29:15,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-07-20 05:29:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 05:29:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-20 05:29:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 05:29:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-07-20 05:29:15,044 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 55 [2020-07-20 05:29:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:15,044 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-07-20 05:29:15,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 05:29:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-07-20 05:29:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 05:29:15,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:15,048 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:15,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:15,265 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-07-20 05:29:15,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:15,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119205294] [2020-07-20 05:29:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-20 05:29:15,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119205294] [2020-07-20 05:29:15,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677678172] [2020-07-20 05:29:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@13d17456 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 [2020-07-20 05:29:15,532 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@13d17456 issued 2 check-sat command(s) [2020-07-20 05:29:15,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:15,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 05:29:15,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-20 05:29:15,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:15,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-07-20 05:29:15,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287758933] [2020-07-20 05:29:15,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 05:29:15,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:15,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 05:29:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-07-20 05:29:15,605 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 14 states. [2020-07-20 05:29:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:15,800 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-07-20 05:29:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 05:29:15,800 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-07-20 05:29:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:15,803 INFO L225 Difference]: With dead ends: 56 [2020-07-20 05:29:15,803 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 05:29:15,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-07-20 05:29:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 05:29:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-20 05:29:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 05:29:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-07-20 05:29:15,814 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 62 [2020-07-20 05:29:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:15,814 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-07-20 05:29:15,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 05:29:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-07-20 05:29:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 05:29:15,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:15,819 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:16,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:16,032 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:16,033 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-07-20 05:29:16,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:16,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159461323] [2020-07-20 05:29:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-20 05:29:16,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159461323] [2020-07-20 05:29:16,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30376468] [2020-07-20 05:29:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19a16584 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:16,317 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19a16584 issued 2 check-sat command(s) [2020-07-20 05:29:16,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:16,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 05:29:16,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-20 05:29:16,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:16,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-20 05:29:16,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774990450] [2020-07-20 05:29:16,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 05:29:16,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:16,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 05:29:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-20 05:29:16,382 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 15 states. [2020-07-20 05:29:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:16,586 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 05:29:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 05:29:16,587 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-07-20 05:29:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:16,588 INFO L225 Difference]: With dead ends: 59 [2020-07-20 05:29:16,588 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 05:29:16,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-07-20 05:29:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 05:29:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-07-20 05:29:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 05:29:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-07-20 05:29:16,596 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 69 [2020-07-20 05:29:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:16,597 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-07-20 05:29:16,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 05:29:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-07-20 05:29:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-20 05:29:16,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:16,598 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:16,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 05:29:16,813 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-07-20 05:29:16,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:16,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113663924] [2020-07-20 05:29:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-20 05:29:17,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113663924] [2020-07-20 05:29:17,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603117504] [2020-07-20 05:29:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6549b4ca 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 [2020-07-20 05:29:17,136 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6549b4ca issued 2 check-sat command(s) [2020-07-20 05:29:17,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 05:29:17,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-20 05:29:17,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:17,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-07-20 05:29:17,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632516999] [2020-07-20 05:29:17,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 05:29:17,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:17,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 05:29:17,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-07-20 05:29:17,190 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 16 states. [2020-07-20 05:29:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:17,430 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-07-20 05:29:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 05:29:17,430 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-07-20 05:29:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:17,433 INFO L225 Difference]: With dead ends: 62 [2020-07-20 05:29:17,433 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 05:29:17,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-07-20 05:29:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 05:29:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-07-20 05:29:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 05:29:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-07-20 05:29:17,450 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 76 [2020-07-20 05:29:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:17,450 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-07-20 05:29:17,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 05:29:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-07-20 05:29:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 05:29:17,451 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:17,452 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:17,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:17,653 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-07-20 05:29:17,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:17,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710635588] [2020-07-20 05:29:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-20 05:29:18,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710635588] [2020-07-20 05:29:18,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806809868] [2020-07-20 05:29:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@13291a13 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:18,113 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@13291a13 issued 2 check-sat command(s) [2020-07-20 05:29:18,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:18,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 05:29:18,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-20 05:29:18,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:18,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-20 05:29:18,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448946405] [2020-07-20 05:29:18,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 05:29:18,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:18,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 05:29:18,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-07-20 05:29:18,213 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 17 states. [2020-07-20 05:29:18,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:18,451 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-20 05:29:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 05:29:18,451 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-07-20 05:29:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:18,453 INFO L225 Difference]: With dead ends: 65 [2020-07-20 05:29:18,453 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 05:29:18,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-07-20 05:29:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 05:29:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-20 05:29:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 05:29:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-07-20 05:29:18,460 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 83 [2020-07-20 05:29:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:18,461 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-07-20 05:29:18,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 05:29:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-07-20 05:29:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-20 05:29:18,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:18,462 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:18,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:18,676 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-07-20 05:29:18,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:18,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576854583] [2020-07-20 05:29:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-20 05:29:19,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576854583] [2020-07-20 05:29:19,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219437242] [2020-07-20 05:29:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b42bee9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:19,145 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b42bee9 issued 2 check-sat command(s) [2020-07-20 05:29:19,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:19,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 05:29:19,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-20 05:29:19,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:19,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-07-20 05:29:19,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437918102] [2020-07-20 05:29:19,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 05:29:19,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:19,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 05:29:19,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-07-20 05:29:19,214 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 18 states. [2020-07-20 05:29:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:19,443 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-07-20 05:29:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 05:29:19,443 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-07-20 05:29:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:19,444 INFO L225 Difference]: With dead ends: 68 [2020-07-20 05:29:19,445 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 05:29:19,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-07-20 05:29:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 05:29:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-07-20 05:29:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 05:29:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-07-20 05:29:19,452 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 90 [2020-07-20 05:29:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:19,453 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-07-20 05:29:19,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 05:29:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-07-20 05:29:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-07-20 05:29:19,454 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:19,454 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:19,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-20 05:29:19,669 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:19,670 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-07-20 05:29:19,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:19,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388400136] [2020-07-20 05:29:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-20 05:29:20,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388400136] [2020-07-20 05:29:20,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948235316] [2020-07-20 05:29:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@638253a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:20,251 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@638253a issued 2 check-sat command(s) [2020-07-20 05:29:20,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 05:29:20,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-20 05:29:20,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:20,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-20 05:29:20,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046685086] [2020-07-20 05:29:20,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 05:29:20,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 05:29:20,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-07-20 05:29:20,310 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 19 states. [2020-07-20 05:29:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:20,561 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-07-20 05:29:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 05:29:20,561 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-07-20 05:29:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:20,562 INFO L225 Difference]: With dead ends: 71 [2020-07-20 05:29:20,562 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 05:29:20,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 05:29:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 05:29:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-07-20 05:29:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 05:29:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-07-20 05:29:20,574 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 97 [2020-07-20 05:29:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:20,575 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-07-20 05:29:20,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 05:29:20,575 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-07-20 05:29:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-20 05:29:20,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:20,578 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:20,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-20 05:29:20,791 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-07-20 05:29:20,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:20,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661973376] [2020-07-20 05:29:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-20 05:29:21,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661973376] [2020-07-20 05:29:21,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221291175] [2020-07-20 05:29:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6686b2a4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:21,382 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6686b2a4 issued 2 check-sat command(s) [2020-07-20 05:29:21,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:21,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 05:29:21,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-20 05:29:21,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:21,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-07-20 05:29:21,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156235183] [2020-07-20 05:29:21,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 05:29:21,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:21,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 05:29:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-07-20 05:29:21,449 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 20 states. [2020-07-20 05:29:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:21,711 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-07-20 05:29:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 05:29:21,712 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-07-20 05:29:21,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:21,713 INFO L225 Difference]: With dead ends: 74 [2020-07-20 05:29:21,714 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 05:29:21,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 05:29:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 05:29:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-20 05:29:21,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 05:29:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-07-20 05:29:21,721 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 104 [2020-07-20 05:29:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:21,721 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-07-20 05:29:21,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 05:29:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-07-20 05:29:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 05:29:21,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:21,723 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:21,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-20 05:29:21,938 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:21,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-07-20 05:29:21,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:21,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556351947] [2020-07-20 05:29:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-20 05:29:22,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556351947] [2020-07-20 05:29:22,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891573263] [2020-07-20 05:29:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@78026864 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:22,603 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@78026864 issued 2 check-sat command(s) [2020-07-20 05:29:22,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:22,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 05:29:22,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-20 05:29:22,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:22,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-20 05:29:22,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331272364] [2020-07-20 05:29:22,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 05:29:22,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:22,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 05:29:22,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-07-20 05:29:22,681 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 21 states. [2020-07-20 05:29:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:22,972 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-07-20 05:29:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 05:29:22,973 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-07-20 05:29:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:22,974 INFO L225 Difference]: With dead ends: 77 [2020-07-20 05:29:22,975 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 05:29:22,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 05:29:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 05:29:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-07-20 05:29:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 05:29:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-07-20 05:29:22,986 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 111 [2020-07-20 05:29:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:22,987 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-07-20 05:29:22,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 05:29:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-07-20 05:29:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-20 05:29:22,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:22,989 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:23,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:23,190 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:23,191 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-07-20 05:29:23,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:23,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020761889] [2020-07-20 05:29:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-20 05:29:23,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020761889] [2020-07-20 05:29:23,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542638008] [2020-07-20 05:29:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1c3d8a67 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:24,056 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1c3d8a67 issued 2 check-sat command(s) [2020-07-20 05:29:24,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:24,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 05:29:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-20 05:29:24,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:24,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-07-20 05:29:24,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549273554] [2020-07-20 05:29:24,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 05:29:24,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:24,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 05:29:24,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-07-20 05:29:24,149 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 22 states. [2020-07-20 05:29:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:24,446 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-20 05:29:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 05:29:24,446 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-07-20 05:29:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:24,448 INFO L225 Difference]: With dead ends: 80 [2020-07-20 05:29:24,448 INFO L226 Difference]: Without dead ends: 76 [2020-07-20 05:29:24,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 05:29:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-20 05:29:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-20 05:29:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 05:29:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-07-20 05:29:24,454 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 118 [2020-07-20 05:29:24,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:24,455 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-07-20 05:29:24,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 05:29:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-07-20 05:29:24,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 05:29:24,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:24,457 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:24,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-07-20 05:29:24,672 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-07-20 05:29:24,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:24,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094913457] [2020-07-20 05:29:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-20 05:29:25,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094913457] [2020-07-20 05:29:25,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874385379] [2020-07-20 05:29:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d310efa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:25,489 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d310efa issued 2 check-sat command(s) [2020-07-20 05:29:25,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:25,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-20 05:29:25,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-20 05:29:25,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:25,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-20 05:29:25,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829712304] [2020-07-20 05:29:25,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 05:29:25,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:25,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 05:29:25,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-07-20 05:29:25,578 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 23 states. [2020-07-20 05:29:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:25,898 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-07-20 05:29:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 05:29:25,898 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 125 [2020-07-20 05:29:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:25,900 INFO L225 Difference]: With dead ends: 83 [2020-07-20 05:29:25,900 INFO L226 Difference]: Without dead ends: 79 [2020-07-20 05:29:25,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2020-07-20 05:29:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-20 05:29:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-20 05:29:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 05:29:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-07-20 05:29:25,908 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 125 [2020-07-20 05:29:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:25,908 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-07-20 05:29:25,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 05:29:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-07-20 05:29:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-20 05:29:25,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:25,909 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:26,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-20 05:29:26,110 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-07-20 05:29:26,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:26,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158745442] [2020-07-20 05:29:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-20 05:29:27,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158745442] [2020-07-20 05:29:27,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754855079] [2020-07-20 05:29:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@53dd8ac5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:27,180 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@53dd8ac5 issued 2 check-sat command(s) [2020-07-20 05:29:27,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:27,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-20 05:29:27,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-20 05:29:27,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:27,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-07-20 05:29:27,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863293517] [2020-07-20 05:29:27,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 05:29:27,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 05:29:27,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-07-20 05:29:27,326 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 24 states. [2020-07-20 05:29:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:27,781 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-07-20 05:29:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-20 05:29:27,782 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-07-20 05:29:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:27,784 INFO L225 Difference]: With dead ends: 86 [2020-07-20 05:29:27,784 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 05:29:27,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2020-07-20 05:29:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 05:29:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-07-20 05:29:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 05:29:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-07-20 05:29:27,795 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 132 [2020-07-20 05:29:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:27,795 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-07-20 05:29:27,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 05:29:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-07-20 05:29:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 05:29:27,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:27,799 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:28,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:28,012 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:28,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-07-20 05:29:28,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:28,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800344603] [2020-07-20 05:29:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-20 05:29:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800344603] [2020-07-20 05:29:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409405999] [2020-07-20 05:29:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f3fba84 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:29,190 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f3fba84 issued 2 check-sat command(s) [2020-07-20 05:29:29,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:29,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 05:29:29,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-20 05:29:29,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:29,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-20 05:29:29,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291517381] [2020-07-20 05:29:29,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-20 05:29:29,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:29,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-20 05:29:29,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-07-20 05:29:29,277 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 25 states. [2020-07-20 05:29:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:29,614 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-07-20 05:29:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 05:29:29,614 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 139 [2020-07-20 05:29:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:29,616 INFO L225 Difference]: With dead ends: 89 [2020-07-20 05:29:29,616 INFO L226 Difference]: Without dead ends: 85 [2020-07-20 05:29:29,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 05:29:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-20 05:29:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-07-20 05:29:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-20 05:29:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-07-20 05:29:29,623 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 139 [2020-07-20 05:29:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:29,623 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-07-20 05:29:29,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-20 05:29:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-07-20 05:29:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-20 05:29:29,625 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:29,625 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:29,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:29,839 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-07-20 05:29:29,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:29,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479868825] [2020-07-20 05:29:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-20 05:29:30,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479868825] [2020-07-20 05:29:30,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623416065] [2020-07-20 05:29:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56cd2a37 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:30,998 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56cd2a37 issued 2 check-sat command(s) [2020-07-20 05:29:30,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:31,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 05:29:31,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-20 05:29:31,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:31,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-07-20 05:29:31,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354068533] [2020-07-20 05:29:31,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 05:29:31,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:31,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 05:29:31,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-07-20 05:29:31,165 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 26 states. [2020-07-20 05:29:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:31,589 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-07-20 05:29:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-20 05:29:31,590 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2020-07-20 05:29:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:31,591 INFO L225 Difference]: With dead ends: 92 [2020-07-20 05:29:31,592 INFO L226 Difference]: Without dead ends: 88 [2020-07-20 05:29:31,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 05:29:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-20 05:29:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-20 05:29:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-20 05:29:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-07-20 05:29:31,600 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 146 [2020-07-20 05:29:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:31,600 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-07-20 05:29:31,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 05:29:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-07-20 05:29:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-20 05:29:31,603 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:31,603 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:31,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:31,818 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:31,818 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-07-20 05:29:31,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:31,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111662887] [2020-07-20 05:29:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-20 05:29:32,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111662887] [2020-07-20 05:29:32,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647589020] [2020-07-20 05:29:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e6df6a9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:32,975 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e6df6a9 issued 2 check-sat command(s) [2020-07-20 05:29:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-20 05:29:32,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-20 05:29:33,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:33,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-20 05:29:33,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601760379] [2020-07-20 05:29:33,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-20 05:29:33,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:33,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-20 05:29:33,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-07-20 05:29:33,084 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 27 states. [2020-07-20 05:29:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:33,509 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-07-20 05:29:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 05:29:33,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 153 [2020-07-20 05:29:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:33,514 INFO L225 Difference]: With dead ends: 95 [2020-07-20 05:29:33,514 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 05:29:33,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2020-07-20 05:29:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 05:29:33,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-07-20 05:29:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-20 05:29:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-07-20 05:29:33,521 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 153 [2020-07-20 05:29:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:33,522 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-07-20 05:29:33,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-20 05:29:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-07-20 05:29:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-20 05:29:33,523 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:33,524 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:33,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-07-20 05:29:33,731 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-07-20 05:29:33,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:33,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914030134] [2020-07-20 05:29:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-20 05:29:34,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914030134] [2020-07-20 05:29:34,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639156479] [2020-07-20 05:29:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@45274feb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:34,831 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@45274feb issued 2 check-sat command(s) [2020-07-20 05:29:34,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:34,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-20 05:29:34,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-20 05:29:34,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:34,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-07-20 05:29:34,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523736286] [2020-07-20 05:29:34,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-20 05:29:34,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:34,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-20 05:29:34,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-07-20 05:29:34,970 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 28 states. [2020-07-20 05:29:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:35,403 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-07-20 05:29:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 05:29:35,403 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 160 [2020-07-20 05:29:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:35,405 INFO L225 Difference]: With dead ends: 98 [2020-07-20 05:29:35,405 INFO L226 Difference]: Without dead ends: 94 [2020-07-20 05:29:35,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 05:29:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-20 05:29:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-07-20 05:29:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 05:29:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-07-20 05:29:35,422 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 160 [2020-07-20 05:29:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:35,423 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-07-20 05:29:35,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-20 05:29:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-07-20 05:29:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-20 05:29:35,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:35,427 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:35,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-07-20 05:29:35,643 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-07-20 05:29:35,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:35,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640391397] [2020-07-20 05:29:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-20 05:29:36,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640391397] [2020-07-20 05:29:36,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925268307] [2020-07-20 05:29:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f0e2085 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:36,809 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6f0e2085 issued 2 check-sat command(s) [2020-07-20 05:29:36,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:36,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-20 05:29:36,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-20 05:29:36,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:36,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-20 05:29:36,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401367193] [2020-07-20 05:29:36,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 05:29:36,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:36,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 05:29:36,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-07-20 05:29:36,904 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 29 states. [2020-07-20 05:29:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:37,337 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-07-20 05:29:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 05:29:37,337 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 167 [2020-07-20 05:29:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:37,339 INFO L225 Difference]: With dead ends: 101 [2020-07-20 05:29:37,339 INFO L226 Difference]: Without dead ends: 97 [2020-07-20 05:29:37,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 05:29:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-20 05:29:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-20 05:29:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-20 05:29:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-07-20 05:29:37,346 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 167 [2020-07-20 05:29:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:37,346 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-07-20 05:29:37,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 05:29:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-07-20 05:29:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-07-20 05:29:37,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:37,348 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:37,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:37,551 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:37,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-07-20 05:29:37,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:37,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041061004] [2020-07-20 05:29:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-20 05:29:38,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041061004] [2020-07-20 05:29:38,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739994083] [2020-07-20 05:29:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52fc5d12 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:38,834 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52fc5d12 issued 2 check-sat command(s) [2020-07-20 05:29:38,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:38,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-20 05:29:38,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-20 05:29:38,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:38,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-07-20 05:29:38,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042889300] [2020-07-20 05:29:38,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 05:29:38,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:38,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 05:29:38,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-07-20 05:29:38,943 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 30 states. [2020-07-20 05:29:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:39,407 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-07-20 05:29:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 05:29:39,407 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2020-07-20 05:29:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:39,409 INFO L225 Difference]: With dead ends: 104 [2020-07-20 05:29:39,409 INFO L226 Difference]: Without dead ends: 100 [2020-07-20 05:29:39,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 05:29:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-20 05:29:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-07-20 05:29:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-20 05:29:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-07-20 05:29:39,416 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 174 [2020-07-20 05:29:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:39,417 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-07-20 05:29:39,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 05:29:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-07-20 05:29:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-20 05:29:39,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:39,418 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:39,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-07-20 05:29:39,629 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:39,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:39,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-07-20 05:29:39,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:39,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17732174] [2020-07-20 05:29:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-20 05:29:40,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17732174] [2020-07-20 05:29:40,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817753060] [2020-07-20 05:29:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a63fa5a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:40,890 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a63fa5a issued 2 check-sat command(s) [2020-07-20 05:29:40,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:40,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-20 05:29:40,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-20 05:29:40,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:40,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-20 05:29:40,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962375508] [2020-07-20 05:29:40,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 05:29:40,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:40,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 05:29:40,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2020-07-20 05:29:40,992 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 31 states. [2020-07-20 05:29:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:41,473 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-07-20 05:29:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 05:29:41,474 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 181 [2020-07-20 05:29:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:41,475 INFO L225 Difference]: With dead ends: 107 [2020-07-20 05:29:41,476 INFO L226 Difference]: Without dead ends: 103 [2020-07-20 05:29:41,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2020-07-20 05:29:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-20 05:29:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-07-20 05:29:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-20 05:29:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-07-20 05:29:41,487 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 181 [2020-07-20 05:29:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:41,488 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-07-20 05:29:41,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 05:29:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-07-20 05:29:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-20 05:29:41,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:41,490 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:41,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:41,704 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-07-20 05:29:41,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:41,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425540983] [2020-07-20 05:29:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-20 05:29:43,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425540983] [2020-07-20 05:29:43,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285147690] [2020-07-20 05:29:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@98a0d8c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:43,124 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@98a0d8c issued 2 check-sat command(s) [2020-07-20 05:29:43,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:43,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 54 conjunts are in the unsatisfiable core [2020-07-20 05:29:43,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-20 05:29:43,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:43,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-07-20 05:29:43,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129696584] [2020-07-20 05:29:43,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-20 05:29:43,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:43,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-20 05:29:43,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=579, Unknown=0, NotChecked=0, Total=992 [2020-07-20 05:29:43,228 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 32 states. [2020-07-20 05:29:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:43,778 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-07-20 05:29:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 05:29:43,779 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 188 [2020-07-20 05:29:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:43,780 INFO L225 Difference]: With dead ends: 110 [2020-07-20 05:29:43,781 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 05:29:43,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2020-07-20 05:29:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 05:29:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-20 05:29:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 05:29:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-07-20 05:29:43,791 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 188 [2020-07-20 05:29:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:43,791 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-07-20 05:29:43,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-20 05:29:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-07-20 05:29:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-20 05:29:43,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:43,794 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:44,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-07-20 05:29:44,009 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-07-20 05:29:44,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:44,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843371818] [2020-07-20 05:29:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-20 05:29:45,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843371818] [2020-07-20 05:29:45,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047140626] [2020-07-20 05:29:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@54377e40 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:45,420 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@54377e40 issued 2 check-sat command(s) [2020-07-20 05:29:45,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:45,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 56 conjunts are in the unsatisfiable core [2020-07-20 05:29:45,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-20 05:29:45,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:45,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-07-20 05:29:45,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337050597] [2020-07-20 05:29:45,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-20 05:29:45,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-20 05:29:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=614, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 05:29:45,536 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 33 states. [2020-07-20 05:29:46,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:46,052 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-07-20 05:29:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 05:29:46,053 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 195 [2020-07-20 05:29:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:46,055 INFO L225 Difference]: With dead ends: 113 [2020-07-20 05:29:46,055 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 05:29:46,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1338, Invalid=2322, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 05:29:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 05:29:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-07-20 05:29:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-20 05:29:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-07-20 05:29:46,062 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 195 [2020-07-20 05:29:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:46,063 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-07-20 05:29:46,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-20 05:29:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-07-20 05:29:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-20 05:29:46,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:46,064 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:46,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-07-20 05:29:46,278 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:46,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-07-20 05:29:46,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:46,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384795736] [2020-07-20 05:29:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-20 05:29:47,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384795736] [2020-07-20 05:29:47,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999282716] [2020-07-20 05:29:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@203f5724 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:47,899 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@203f5724 issued 2 check-sat command(s) [2020-07-20 05:29:47,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:47,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-20 05:29:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-20 05:29:48,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:48,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2020-07-20 05:29:48,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687026052] [2020-07-20 05:29:48,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-20 05:29:48,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-20 05:29:48,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=650, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 05:29:48,009 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 34 states. [2020-07-20 05:29:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:48,624 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-07-20 05:29:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-20 05:29:48,624 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 202 [2020-07-20 05:29:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:48,626 INFO L225 Difference]: With dead ends: 116 [2020-07-20 05:29:48,626 INFO L226 Difference]: Without dead ends: 112 [2020-07-20 05:29:48,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1429, Invalid=2477, Unknown=0, NotChecked=0, Total=3906 [2020-07-20 05:29:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-20 05:29:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-07-20 05:29:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-20 05:29:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-20 05:29:48,637 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 202 [2020-07-20 05:29:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:48,638 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-20 05:29:48,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-20 05:29:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-20 05:29:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-20 05:29:48,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:48,640 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:48,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-07-20 05:29:48,849 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:48,849 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-07-20 05:29:48,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:48,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100334757] [2020-07-20 05:29:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-20 05:29:50,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100334757] [2020-07-20 05:29:50,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940474210] [2020-07-20 05:29:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4296eb36 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:50,552 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4296eb36 issued 2 check-sat command(s) [2020-07-20 05:29:50,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-20 05:29:50,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-20 05:29:50,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:50,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-07-20 05:29:50,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777253510] [2020-07-20 05:29:50,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-20 05:29:50,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:50,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-20 05:29:50,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=687, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 05:29:50,687 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 35 states. [2020-07-20 05:29:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:51,305 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-07-20 05:29:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 05:29:51,305 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 209 [2020-07-20 05:29:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:51,307 INFO L225 Difference]: With dead ends: 119 [2020-07-20 05:29:51,307 INFO L226 Difference]: Without dead ends: 115 [2020-07-20 05:29:51,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1523, Invalid=2637, Unknown=0, NotChecked=0, Total=4160 [2020-07-20 05:29:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-20 05:29:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-20 05:29:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-20 05:29:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-07-20 05:29:51,320 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 209 [2020-07-20 05:29:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:51,321 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-07-20 05:29:51,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-20 05:29:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-07-20 05:29:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-07-20 05:29:51,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:51,322 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:51,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:51,529 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:51,530 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-07-20 05:29:51,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:51,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582626875] [2020-07-20 05:29:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-20 05:29:53,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582626875] [2020-07-20 05:29:53,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792771695] [2020-07-20 05:29:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7125a6cb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:53,394 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7125a6cb issued 2 check-sat command(s) [2020-07-20 05:29:53,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:53,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-20 05:29:53,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-20 05:29:53,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:53,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-07-20 05:29:53,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113016467] [2020-07-20 05:29:53,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 05:29:53,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 05:29:53,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=725, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 05:29:53,510 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 36 states. [2020-07-20 05:29:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:54,127 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-20 05:29:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-20 05:29:54,127 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 216 [2020-07-20 05:29:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:54,129 INFO L225 Difference]: With dead ends: 122 [2020-07-20 05:29:54,130 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 05:29:54,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1620, Invalid=2802, Unknown=0, NotChecked=0, Total=4422 [2020-07-20 05:29:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 05:29:54,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-07-20 05:29:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-20 05:29:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-07-20 05:29:54,137 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 216 [2020-07-20 05:29:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:54,137 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-07-20 05:29:54,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 05:29:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-07-20 05:29:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-20 05:29:54,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:54,139 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:54,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-07-20 05:29:54,353 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:54,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:54,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-07-20 05:29:54,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:54,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742561380] [2020-07-20 05:29:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-20 05:29:56,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742561380] [2020-07-20 05:29:56,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023524819] [2020-07-20 05:29:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ac6707b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:56,236 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ac6707b issued 2 check-sat command(s) [2020-07-20 05:29:56,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:56,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-20 05:29:56,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-20 05:29:56,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:56,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-07-20 05:29:56,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816493989] [2020-07-20 05:29:56,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 05:29:56,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:56,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 05:29:56,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=764, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 05:29:56,394 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 37 states. [2020-07-20 05:29:57,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:57,041 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-07-20 05:29:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 05:29:57,042 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 223 [2020-07-20 05:29:57,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:57,044 INFO L225 Difference]: With dead ends: 125 [2020-07-20 05:29:57,044 INFO L226 Difference]: Without dead ends: 121 [2020-07-20 05:29:57,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1720, Invalid=2972, Unknown=0, NotChecked=0, Total=4692 [2020-07-20 05:29:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-20 05:29:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-07-20 05:29:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-20 05:29:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-07-20 05:29:57,051 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 223 [2020-07-20 05:29:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:57,052 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-07-20 05:29:57,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 05:29:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-07-20 05:29:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-07-20 05:29:57,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:57,054 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:57,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:57,268 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-07-20 05:29:57,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:57,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891474806] [2020-07-20 05:29:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:29:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-20 05:29:59,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891474806] [2020-07-20 05:29:59,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140338231] [2020-07-20 05:29:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d8af1a1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:59,354 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d8af1a1 issued 2 check-sat command(s) [2020-07-20 05:29:59,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:59,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 66 conjunts are in the unsatisfiable core [2020-07-20 05:29:59,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-20 05:29:59,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:59,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2020-07-20 05:29:59,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838028472] [2020-07-20 05:29:59,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-20 05:29:59,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-20 05:29:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=804, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 05:29:59,495 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 38 states. [2020-07-20 05:30:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:00,193 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-07-20 05:30:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-20 05:30:00,194 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 230 [2020-07-20 05:30:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:00,196 INFO L225 Difference]: With dead ends: 128 [2020-07-20 05:30:00,196 INFO L226 Difference]: Without dead ends: 124 [2020-07-20 05:30:00,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2020-07-20 05:30:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-20 05:30:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-20 05:30:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-20 05:30:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-07-20 05:30:00,203 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 230 [2020-07-20 05:30:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:00,203 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-07-20 05:30:00,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-20 05:30:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-07-20 05:30:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-20 05:30:00,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:00,205 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:00,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-07-20 05:30:00,421 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:00,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:00,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-07-20 05:30:00,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:00,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909242244] [2020-07-20 05:30:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-20 05:30:02,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909242244] [2020-07-20 05:30:02,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82965704] [2020-07-20 05:30:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1f5a924b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:02,719 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1f5a924b issued 2 check-sat command(s) [2020-07-20 05:30:02,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:02,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-20 05:30:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-20 05:30:02,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:02,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-07-20 05:30:02,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782864774] [2020-07-20 05:30:02,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-20 05:30:02,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-20 05:30:02,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=845, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 05:30:02,863 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 39 states. [2020-07-20 05:30:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:03,599 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-07-20 05:30:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-20 05:30:03,599 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 237 [2020-07-20 05:30:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:03,601 INFO L225 Difference]: With dead ends: 131 [2020-07-20 05:30:03,601 INFO L226 Difference]: Without dead ends: 127 [2020-07-20 05:30:03,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1929, Invalid=3327, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 05:30:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-20 05:30:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-07-20 05:30:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-20 05:30:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2020-07-20 05:30:03,609 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 237 [2020-07-20 05:30:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:03,610 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2020-07-20 05:30:03,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-20 05:30:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2020-07-20 05:30:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-20 05:30:03,612 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:03,612 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:03,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-07-20 05:30:03,820 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:03,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-07-20 05:30:03,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:03,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090314488] [2020-07-20 05:30:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-20 05:30:06,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090314488] [2020-07-20 05:30:06,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124782428] [2020-07-20 05:30:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@552c4678 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:06,697 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@552c4678 issued 2 check-sat command(s) [2020-07-20 05:30:06,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:06,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-20 05:30:06,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-20 05:30:06,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:06,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2020-07-20 05:30:06,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502622249] [2020-07-20 05:30:06,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-20 05:30:06,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:06,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-20 05:30:06,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=887, Unknown=0, NotChecked=0, Total=1560 [2020-07-20 05:30:06,858 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 40 states. [2020-07-20 05:30:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:07,601 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-07-20 05:30:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-20 05:30:07,601 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 244 [2020-07-20 05:30:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:07,603 INFO L225 Difference]: With dead ends: 134 [2020-07-20 05:30:07,603 INFO L226 Difference]: Without dead ends: 130 [2020-07-20 05:30:07,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2038, Invalid=3512, Unknown=0, NotChecked=0, Total=5550 [2020-07-20 05:30:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-20 05:30:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-07-20 05:30:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 05:30:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-07-20 05:30:07,613 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 244 [2020-07-20 05:30:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:07,614 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-07-20 05:30:07,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-20 05:30:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-07-20 05:30:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-20 05:30:07,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:07,617 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:07,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-07-20 05:30:07,830 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:07,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:07,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-07-20 05:30:07,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:07,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243303696] [2020-07-20 05:30:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-20 05:30:10,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243303696] [2020-07-20 05:30:10,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631284813] [2020-07-20 05:30:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a5e2312 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:10,250 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a5e2312 issued 2 check-sat command(s) [2020-07-20 05:30:10,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:10,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 72 conjunts are in the unsatisfiable core [2020-07-20 05:30:10,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-20 05:30:10,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:10,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-07-20 05:30:10,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714390982] [2020-07-20 05:30:10,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-20 05:30:10,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:10,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-20 05:30:10,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=930, Unknown=0, NotChecked=0, Total=1640 [2020-07-20 05:30:10,381 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 41 states. [2020-07-20 05:30:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:11,171 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-07-20 05:30:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 05:30:11,172 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 251 [2020-07-20 05:30:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:11,174 INFO L225 Difference]: With dead ends: 137 [2020-07-20 05:30:11,175 INFO L226 Difference]: Without dead ends: 133 [2020-07-20 05:30:11,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2150, Invalid=3702, Unknown=0, NotChecked=0, Total=5852 [2020-07-20 05:30:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-20 05:30:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-20 05:30:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-20 05:30:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2020-07-20 05:30:11,181 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 251 [2020-07-20 05:30:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:11,182 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2020-07-20 05:30:11,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-20 05:30:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2020-07-20 05:30:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-20 05:30:11,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:11,184 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:11,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-07-20 05:30:11,398 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-07-20 05:30:11,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:11,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308419060] [2020-07-20 05:30:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-20 05:30:14,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308419060] [2020-07-20 05:30:14,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192882917] [2020-07-20 05:30:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a8ed06a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:14,144 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a8ed06a issued 2 check-sat command(s) [2020-07-20 05:30:14,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:14,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 74 conjunts are in the unsatisfiable core [2020-07-20 05:30:14,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-20 05:30:14,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:14,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2020-07-20 05:30:14,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127274445] [2020-07-20 05:30:14,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-20 05:30:14,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:14,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-20 05:30:14,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=974, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 05:30:14,323 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 42 states. [2020-07-20 05:30:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:15,136 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-07-20 05:30:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-20 05:30:15,136 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 258 [2020-07-20 05:30:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:15,138 INFO L225 Difference]: With dead ends: 140 [2020-07-20 05:30:15,138 INFO L226 Difference]: Without dead ends: 136 [2020-07-20 05:30:15,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2265, Invalid=3897, Unknown=0, NotChecked=0, Total=6162 [2020-07-20 05:30:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-20 05:30:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-07-20 05:30:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-20 05:30:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2020-07-20 05:30:15,146 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 258 [2020-07-20 05:30:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:15,147 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2020-07-20 05:30:15,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-20 05:30:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2020-07-20 05:30:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-20 05:30:15,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:15,149 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:15,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-07-20 05:30:15,362 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:15,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:15,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1327343593, now seen corresponding path program 36 times [2020-07-20 05:30:15,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:15,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129750036] [2020-07-20 05:30:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-20 05:30:18,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129750036] [2020-07-20 05:30:18,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504246798] [2020-07-20 05:30:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60b6ab55 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:18,298 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60b6ab55 issued 2 check-sat command(s) [2020-07-20 05:30:18,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:18,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 76 conjunts are in the unsatisfiable core [2020-07-20 05:30:18,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-20 05:30:18,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:18,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-07-20 05:30:18,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738126406] [2020-07-20 05:30:18,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-20 05:30:18,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:18,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-20 05:30:18,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2020-07-20 05:30:18,504 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 43 states. [2020-07-20 05:30:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:19,387 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-07-20 05:30:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-20 05:30:19,388 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 265 [2020-07-20 05:30:19,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:19,390 INFO L225 Difference]: With dead ends: 143 [2020-07-20 05:30:19,390 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 05:30:19,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2383, Invalid=4097, Unknown=0, NotChecked=0, Total=6480 [2020-07-20 05:30:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 05:30:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-07-20 05:30:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-07-20 05:30:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2020-07-20 05:30:19,397 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 265 [2020-07-20 05:30:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:19,397 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2020-07-20 05:30:19,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-20 05:30:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2020-07-20 05:30:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-20 05:30:19,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:19,399 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:19,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-07-20 05:30:19,605 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:19,606 INFO L82 PathProgramCache]: Analyzing trace with hash -742628704, now seen corresponding path program 37 times [2020-07-20 05:30:19,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:19,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894994406] [2020-07-20 05:30:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-20 05:30:22,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894994406] [2020-07-20 05:30:22,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496099253] [2020-07-20 05:30:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f67742a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:22,592 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f67742a issued 2 check-sat command(s) [2020-07-20 05:30:22,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:22,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 78 conjunts are in the unsatisfiable core [2020-07-20 05:30:22,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-20 05:30:22,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:22,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 44 [2020-07-20 05:30:22,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341807996] [2020-07-20 05:30:22,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-20 05:30:22,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-20 05:30:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=1065, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 05:30:22,842 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 44 states. [2020-07-20 05:30:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:23,914 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-07-20 05:30:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 05:30:23,914 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 272 [2020-07-20 05:30:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:23,916 INFO L225 Difference]: With dead ends: 146 [2020-07-20 05:30:23,916 INFO L226 Difference]: Without dead ends: 142 [2020-07-20 05:30:23,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2504, Invalid=4302, Unknown=0, NotChecked=0, Total=6806 [2020-07-20 05:30:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-20 05:30:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-20 05:30:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 05:30:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2020-07-20 05:30:23,923 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 272 [2020-07-20 05:30:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:23,923 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2020-07-20 05:30:23,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-20 05:30:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2020-07-20 05:30:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-20 05:30:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:23,925 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:24,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-07-20 05:30:24,139 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:24,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:24,140 INFO L82 PathProgramCache]: Analyzing trace with hash 571018495, now seen corresponding path program 38 times [2020-07-20 05:30:24,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:24,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339839540] [2020-07-20 05:30:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-20 05:30:27,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339839540] [2020-07-20 05:30:27,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717777901] [2020-07-20 05:30:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f67179b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:28,063 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f67179b issued 2 check-sat command(s) [2020-07-20 05:30:28,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:28,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 80 conjunts are in the unsatisfiable core [2020-07-20 05:30:28,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-20 05:30:28,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:28,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-07-20 05:30:28,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532281775] [2020-07-20 05:30:28,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-20 05:30:28,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:28,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-20 05:30:28,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=868, Invalid=1112, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 05:30:28,361 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand 45 states. [2020-07-20 05:30:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:29,320 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-07-20 05:30:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 05:30:29,320 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 279 [2020-07-20 05:30:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:29,322 INFO L225 Difference]: With dead ends: 149 [2020-07-20 05:30:29,322 INFO L226 Difference]: Without dead ends: 145 [2020-07-20 05:30:29,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2628, Invalid=4512, Unknown=0, NotChecked=0, Total=7140 [2020-07-20 05:30:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-20 05:30:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-07-20 05:30:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-20 05:30:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-07-20 05:30:29,332 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 279 [2020-07-20 05:30:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:29,333 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-07-20 05:30:29,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-20 05:30:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-07-20 05:30:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-20 05:30:29,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:29,335 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:29,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-07-20 05:30:29,551 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:29,552 INFO L82 PathProgramCache]: Analyzing trace with hash -708506358, now seen corresponding path program 39 times [2020-07-20 05:30:29,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:29,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463099505] [2020-07-20 05:30:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-20 05:30:33,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463099505] [2020-07-20 05:30:33,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51792684] [2020-07-20 05:30:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55011b73 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:33,390 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55011b73 issued 2 check-sat command(s) [2020-07-20 05:30:33,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 82 conjunts are in the unsatisfiable core [2020-07-20 05:30:33,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-20 05:30:33,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:33,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 46 [2020-07-20 05:30:33,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520676149] [2020-07-20 05:30:33,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-20 05:30:33,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:33,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-20 05:30:33,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=1160, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 05:30:33,588 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 46 states. [2020-07-20 05:30:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:34,682 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-07-20 05:30:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-20 05:30:34,682 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 286 [2020-07-20 05:30:34,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:34,684 INFO L225 Difference]: With dead ends: 152 [2020-07-20 05:30:34,684 INFO L226 Difference]: Without dead ends: 148 [2020-07-20 05:30:34,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2755, Invalid=4727, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 05:30:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-07-20 05:30:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-07-20 05:30:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 05:30:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-07-20 05:30:34,694 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 286 [2020-07-20 05:30:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:34,694 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-07-20 05:30:34,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-20 05:30:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-07-20 05:30:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-07-20 05:30:34,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:34,697 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:34,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:34,911 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash 287341333, now seen corresponding path program 40 times [2020-07-20 05:30:34,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:34,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284454381] [2020-07-20 05:30:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-20 05:30:38,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284454381] [2020-07-20 05:30:38,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678262458] [2020-07-20 05:30:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@22f76631 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:38,830 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@22f76631 issued 2 check-sat command(s) [2020-07-20 05:30:38,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:38,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 84 conjunts are in the unsatisfiable core [2020-07-20 05:30:38,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-20 05:30:39,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:39,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-07-20 05:30:39,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348552441] [2020-07-20 05:30:39,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-20 05:30:39,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:39,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-20 05:30:39,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=1209, Unknown=0, NotChecked=0, Total=2162 [2020-07-20 05:30:39,044 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 47 states. [2020-07-20 05:30:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:40,102 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-07-20 05:30:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-20 05:30:40,103 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 293 [2020-07-20 05:30:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:40,105 INFO L225 Difference]: With dead ends: 155 [2020-07-20 05:30:40,105 INFO L226 Difference]: Without dead ends: 151 [2020-07-20 05:30:40,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2885, Invalid=4947, Unknown=0, NotChecked=0, Total=7832 [2020-07-20 05:30:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-20 05:30:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-20 05:30:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-20 05:30:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2020-07-20 05:30:40,113 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 293 [2020-07-20 05:30:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:40,114 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2020-07-20 05:30:40,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-20 05:30:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2020-07-20 05:30:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-07-20 05:30:40,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:40,116 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:40,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:40,330 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2006277748, now seen corresponding path program 41 times [2020-07-20 05:30:40,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:40,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315330373] [2020-07-20 05:30:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-20 05:30:44,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315330373] [2020-07-20 05:30:44,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874765769] [2020-07-20 05:30:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@cecd612 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:44,571 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@cecd612 issued 2 check-sat command(s) [2020-07-20 05:30:44,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:44,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 86 conjunts are in the unsatisfiable core [2020-07-20 05:30:44,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-20 05:30:44,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:44,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 48 [2020-07-20 05:30:44,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742084518] [2020-07-20 05:30:44,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-20 05:30:44,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-20 05:30:44,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=1259, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 05:30:44,841 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 48 states. [2020-07-20 05:30:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:45,877 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2020-07-20 05:30:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-07-20 05:30:45,877 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 300 [2020-07-20 05:30:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:45,879 INFO L225 Difference]: With dead ends: 158 [2020-07-20 05:30:45,879 INFO L226 Difference]: Without dead ends: 154 [2020-07-20 05:30:45,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3018, Invalid=5172, Unknown=0, NotChecked=0, Total=8190 [2020-07-20 05:30:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-20 05:30:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-07-20 05:30:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-20 05:30:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2020-07-20 05:30:45,887 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 300 [2020-07-20 05:30:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:45,888 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2020-07-20 05:30:45,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-20 05:30:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2020-07-20 05:30:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-20 05:30:45,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:45,890 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:46,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-07-20 05:30:46,104 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash 707039787, now seen corresponding path program 42 times [2020-07-20 05:30:46,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:46,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348485876] [2020-07-20 05:30:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-20 05:30:50,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348485876] [2020-07-20 05:30:50,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872577216] [2020-07-20 05:30:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7455025c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:50,365 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7455025c issued 2 check-sat command(s) [2020-07-20 05:30:50,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:50,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 88 conjunts are in the unsatisfiable core [2020-07-20 05:30:50,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-20 05:30:50,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:50,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-07-20 05:30:50,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767437275] [2020-07-20 05:30:50,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-20 05:30:50,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:50,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-20 05:30:50,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1042, Invalid=1310, Unknown=0, NotChecked=0, Total=2352 [2020-07-20 05:30:50,548 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand 49 states. [2020-07-20 05:30:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:51,665 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-07-20 05:30:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-20 05:30:51,666 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 307 [2020-07-20 05:30:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:51,667 INFO L225 Difference]: With dead ends: 161 [2020-07-20 05:30:51,667 INFO L226 Difference]: Without dead ends: 157 [2020-07-20 05:30:51,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3154, Invalid=5402, Unknown=0, NotChecked=0, Total=8556 [2020-07-20 05:30:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-20 05:30:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-07-20 05:30:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-20 05:30:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2020-07-20 05:30:51,677 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 307 [2020-07-20 05:30:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:51,678 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2020-07-20 05:30:51,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-20 05:30:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2020-07-20 05:30:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-07-20 05:30:51,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:51,680 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:51,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:51,895 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:51,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:51,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1671645474, now seen corresponding path program 43 times [2020-07-20 05:30:51,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:51,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684468090] [2020-07-20 05:30:51,896 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-20 05:30:56,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684468090] [2020-07-20 05:30:56,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570646425] [2020-07-20 05:30:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19746003 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:56,283 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@19746003 issued 2 check-sat command(s) [2020-07-20 05:30:56,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:30:56,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 90 conjunts are in the unsatisfiable core [2020-07-20 05:30:56,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:30:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-20 05:30:56,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:30:56,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 50 [2020-07-20 05:30:56,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362709355] [2020-07-20 05:30:56,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-20 05:30:56,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:30:56,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-20 05:30:56,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=1362, Unknown=0, NotChecked=0, Total=2450 [2020-07-20 05:30:56,496 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 50 states. [2020-07-20 05:30:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:30:57,596 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-07-20 05:30:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-20 05:30:57,597 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 314 [2020-07-20 05:30:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:30:57,599 INFO L225 Difference]: With dead ends: 164 [2020-07-20 05:30:57,600 INFO L226 Difference]: Without dead ends: 160 [2020-07-20 05:30:57,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3293, Invalid=5637, Unknown=0, NotChecked=0, Total=8930 [2020-07-20 05:30:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-20 05:30:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-20 05:30:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-20 05:30:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2020-07-20 05:30:57,608 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 314 [2020-07-20 05:30:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:30:57,609 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2020-07-20 05:30:57,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-20 05:30:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2020-07-20 05:30:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-20 05:30:57,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:30:57,611 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:30:57,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:30:57,825 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:30:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:30:57,826 INFO L82 PathProgramCache]: Analyzing trace with hash -797576639, now seen corresponding path program 44 times [2020-07-20 05:30:57,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:30:57,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228785098] [2020-07-20 05:30:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:30:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:30:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-20 05:31:02,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228785098] [2020-07-20 05:31:02,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541450237] [2020-07-20 05:31:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9d7af40 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:02,987 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9d7af40 issued 2 check-sat command(s) [2020-07-20 05:31:02,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:02,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 92 conjunts are in the unsatisfiable core [2020-07-20 05:31:02,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-20 05:31:03,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:03,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-07-20 05:31:03,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004329636] [2020-07-20 05:31:03,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-20 05:31:03,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:03,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-20 05:31:03,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2020-07-20 05:31:03,210 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 51 states. [2020-07-20 05:31:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:04,478 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-07-20 05:31:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-20 05:31:04,478 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 321 [2020-07-20 05:31:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:04,480 INFO L225 Difference]: With dead ends: 167 [2020-07-20 05:31:04,480 INFO L226 Difference]: Without dead ends: 163 [2020-07-20 05:31:04,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3435, Invalid=5877, Unknown=0, NotChecked=0, Total=9312 [2020-07-20 05:31:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-07-20 05:31:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-07-20 05:31:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-20 05:31:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2020-07-20 05:31:04,488 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 321 [2020-07-20 05:31:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:04,489 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2020-07-20 05:31:04,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-20 05:31:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2020-07-20 05:31:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 05:31:04,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:04,491 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:04,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-07-20 05:31:04,705 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:04,706 INFO L82 PathProgramCache]: Analyzing trace with hash 44725832, now seen corresponding path program 45 times [2020-07-20 05:31:04,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:04,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022693468] [2020-07-20 05:31:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-20 05:31:10,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022693468] [2020-07-20 05:31:10,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465444866] [2020-07-20 05:31:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@241d6935 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:10,138 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@241d6935 issued 2 check-sat command(s) [2020-07-20 05:31:10,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:10,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 94 conjunts are in the unsatisfiable core [2020-07-20 05:31:10,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-20 05:31:10,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:10,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 52 [2020-07-20 05:31:10,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42817242] [2020-07-20 05:31:10,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-20 05:31:10,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-20 05:31:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 05:31:10,401 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 52 states. [2020-07-20 05:31:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:11,595 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-20 05:31:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-20 05:31:11,596 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 328 [2020-07-20 05:31:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:11,597 INFO L225 Difference]: With dead ends: 170 [2020-07-20 05:31:11,597 INFO L226 Difference]: Without dead ends: 166 [2020-07-20 05:31:11,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3580, Invalid=6122, Unknown=0, NotChecked=0, Total=9702 [2020-07-20 05:31:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-20 05:31:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-20 05:31:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-20 05:31:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2020-07-20 05:31:11,606 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 328 [2020-07-20 05:31:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:11,607 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2020-07-20 05:31:11,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-20 05:31:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2020-07-20 05:31:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 05:31:11,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:11,613 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:11,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-07-20 05:31:11,829 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash 454376279, now seen corresponding path program 46 times [2020-07-20 05:31:11,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:11,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438585874] [2020-07-20 05:31:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-20 05:31:17,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438585874] [2020-07-20 05:31:17,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571345485] [2020-07-20 05:31:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2320c63 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:17,578 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2320c63 issued 2 check-sat command(s) [2020-07-20 05:31:17,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:17,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-20 05:31:17,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-20 05:31:17,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:17,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-07-20 05:31:17,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834553379] [2020-07-20 05:31:17,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 05:31:17,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:17,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 05:31:17,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1232, Invalid=1524, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 05:31:17,776 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand 53 states. [2020-07-20 05:31:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:19,026 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-07-20 05:31:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-20 05:31:19,027 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 335 [2020-07-20 05:31:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:19,029 INFO L225 Difference]: With dead ends: 173 [2020-07-20 05:31:19,029 INFO L226 Difference]: Without dead ends: 169 [2020-07-20 05:31:19,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3728, Invalid=6372, Unknown=0, NotChecked=0, Total=10100 [2020-07-20 05:31:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-20 05:31:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-20 05:31:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-20 05:31:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2020-07-20 05:31:19,040 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 335 [2020-07-20 05:31:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:19,040 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2020-07-20 05:31:19,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 05:31:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2020-07-20 05:31:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-20 05:31:19,042 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:19,043 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:19,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-07-20 05:31:19,257 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:19,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1718484146, now seen corresponding path program 47 times [2020-07-20 05:31:19,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:19,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161194231] [2020-07-20 05:31:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-20 05:31:24,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161194231] [2020-07-20 05:31:24,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781545819] [2020-07-20 05:31:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16330de8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:25,025 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16330de8 issued 2 check-sat command(s) [2020-07-20 05:31:25,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:25,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-20 05:31:25,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-20 05:31:25,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:25,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 54 [2020-07-20 05:31:25,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315382049] [2020-07-20 05:31:25,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-20 05:31:25,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-20 05:31:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=1580, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 05:31:25,335 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand 54 states. [2020-07-20 05:31:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:26,726 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-07-20 05:31:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-20 05:31:26,726 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 342 [2020-07-20 05:31:26,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:26,728 INFO L225 Difference]: With dead ends: 176 [2020-07-20 05:31:26,729 INFO L226 Difference]: Without dead ends: 172 [2020-07-20 05:31:26,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3879, Invalid=6627, Unknown=0, NotChecked=0, Total=10506 [2020-07-20 05:31:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-20 05:31:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-07-20 05:31:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-20 05:31:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-07-20 05:31:26,737 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 342 [2020-07-20 05:31:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:26,738 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-07-20 05:31:26,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-20 05:31:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-07-20 05:31:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-20 05:31:26,740 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:26,741 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:26,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:26,955 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:26,956 INFO L82 PathProgramCache]: Analyzing trace with hash 849546605, now seen corresponding path program 48 times [2020-07-20 05:31:26,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:26,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299178224] [2020-07-20 05:31:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-20 05:31:32,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299178224] [2020-07-20 05:31:32,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791622186] [2020-07-20 05:31:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47c7213b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:32,279 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47c7213b issued 2 check-sat command(s) [2020-07-20 05:31:32,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:32,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-20 05:31:32,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-20 05:31:32,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:32,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-07-20 05:31:32,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553331017] [2020-07-20 05:31:32,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-20 05:31:32,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:32,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-20 05:31:32,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=1637, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 05:31:32,469 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 55 states. [2020-07-20 05:31:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:33,815 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-07-20 05:31:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-20 05:31:33,816 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 349 [2020-07-20 05:31:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:33,818 INFO L225 Difference]: With dead ends: 179 [2020-07-20 05:31:33,818 INFO L226 Difference]: Without dead ends: 175 [2020-07-20 05:31:33,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4033, Invalid=6887, Unknown=0, NotChecked=0, Total=10920 [2020-07-20 05:31:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-20 05:31:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-07-20 05:31:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-07-20 05:31:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2020-07-20 05:31:33,825 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 349 [2020-07-20 05:31:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:33,826 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 181 transitions. [2020-07-20 05:31:33,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-20 05:31:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 181 transitions. [2020-07-20 05:31:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-07-20 05:31:33,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:33,829 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:34,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-07-20 05:31:34,044 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:34,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1560892900, now seen corresponding path program 49 times [2020-07-20 05:31:34,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:34,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604430839] [2020-07-20 05:31:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-20 05:31:39,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604430839] [2020-07-20 05:31:39,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338116539] [2020-07-20 05:31:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d1115f6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:39,841 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d1115f6 issued 2 check-sat command(s) [2020-07-20 05:31:39,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 102 conjunts are in the unsatisfiable core [2020-07-20 05:31:39,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-20 05:31:40,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:40,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 56 [2020-07-20 05:31:40,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808630188] [2020-07-20 05:31:40,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-20 05:31:40,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:40,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-20 05:31:40,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=1695, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 05:31:40,114 INFO L87 Difference]: Start difference. First operand 173 states and 181 transitions. Second operand 56 states. [2020-07-20 05:31:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:41,491 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2020-07-20 05:31:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-20 05:31:41,492 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 356 [2020-07-20 05:31:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:41,494 INFO L225 Difference]: With dead ends: 182 [2020-07-20 05:31:41,495 INFO L226 Difference]: Without dead ends: 178 [2020-07-20 05:31:41,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4190, Invalid=7152, Unknown=0, NotChecked=0, Total=11342 [2020-07-20 05:31:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-20 05:31:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-20 05:31:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-20 05:31:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2020-07-20 05:31:41,502 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 356 [2020-07-20 05:31:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:41,502 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2020-07-20 05:31:41,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-20 05:31:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2020-07-20 05:31:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-07-20 05:31:41,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:41,506 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:41,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:41,719 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:41,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1352660861, now seen corresponding path program 50 times [2020-07-20 05:31:41,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:41,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756932618] [2020-07-20 05:31:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-20 05:31:47,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756932618] [2020-07-20 05:31:47,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243672570] [2020-07-20 05:31:47,502 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38d63022 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:47,621 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@38d63022 issued 2 check-sat command(s) [2020-07-20 05:31:47,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:47,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 104 conjunts are in the unsatisfiable core [2020-07-20 05:31:47,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-20 05:31:47,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:47,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-07-20 05:31:47,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336046146] [2020-07-20 05:31:47,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-20 05:31:47,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:47,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-20 05:31:47,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=1754, Unknown=0, NotChecked=0, Total=3192 [2020-07-20 05:31:47,848 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand 57 states. [2020-07-20 05:31:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:49,315 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-07-20 05:31:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-20 05:31:49,316 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 363 [2020-07-20 05:31:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:49,318 INFO L225 Difference]: With dead ends: 185 [2020-07-20 05:31:49,319 INFO L226 Difference]: Without dead ends: 181 [2020-07-20 05:31:49,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4350, Invalid=7422, Unknown=0, NotChecked=0, Total=11772 [2020-07-20 05:31:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-07-20 05:31:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-07-20 05:31:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-07-20 05:31:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2020-07-20 05:31:49,326 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 363 [2020-07-20 05:31:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:49,327 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2020-07-20 05:31:49,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-20 05:31:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2020-07-20 05:31:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-07-20 05:31:49,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:49,330 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:49,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:49,543 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:49,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:49,543 INFO L82 PathProgramCache]: Analyzing trace with hash -722215290, now seen corresponding path program 51 times [2020-07-20 05:31:49,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:49,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653384153] [2020-07-20 05:31:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-20 05:31:55,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653384153] [2020-07-20 05:31:55,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555791963] [2020-07-20 05:31:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1125c3fa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:31:55,813 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1125c3fa issued 2 check-sat command(s) [2020-07-20 05:31:55,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:31:55,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 106 conjunts are in the unsatisfiable core [2020-07-20 05:31:55,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:31:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-20 05:31:56,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:31:56,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 58 [2020-07-20 05:31:56,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107080955] [2020-07-20 05:31:56,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-20 05:31:56,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:31:56,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-20 05:31:56,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1492, Invalid=1814, Unknown=0, NotChecked=0, Total=3306 [2020-07-20 05:31:56,076 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 58 states. [2020-07-20 05:31:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:31:57,529 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-07-20 05:31:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-20 05:31:57,530 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 370 [2020-07-20 05:31:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:31:57,531 INFO L225 Difference]: With dead ends: 188 [2020-07-20 05:31:57,532 INFO L226 Difference]: Without dead ends: 184 [2020-07-20 05:31:57,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4513, Invalid=7697, Unknown=0, NotChecked=0, Total=12210 [2020-07-20 05:31:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-20 05:31:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-07-20 05:31:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-07-20 05:31:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2020-07-20 05:31:57,539 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 370 [2020-07-20 05:31:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:31:57,539 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2020-07-20 05:31:57,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-20 05:31:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2020-07-20 05:31:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-07-20 05:31:57,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:31:57,542 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:31:57,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-07-20 05:31:57,758 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:31:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:31:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash -148058983, now seen corresponding path program 52 times [2020-07-20 05:31:57,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:31:57,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992308883] [2020-07-20 05:31:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:31:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:31:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-20 05:32:04,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992308883] [2020-07-20 05:32:04,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743281736] [2020-07-20 05:32:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4225a116 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:04,647 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4225a116 issued 2 check-sat command(s) [2020-07-20 05:32:04,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:32:04,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 108 conjunts are in the unsatisfiable core [2020-07-20 05:32:04,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:32:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-20 05:32:04,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:32:04,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-07-20 05:32:04,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711405878] [2020-07-20 05:32:04,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-20 05:32:04,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:32:04,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-20 05:32:04,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1547, Invalid=1875, Unknown=0, NotChecked=0, Total=3422 [2020-07-20 05:32:04,912 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand 59 states. [2020-07-20 05:32:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:32:06,478 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-07-20 05:32:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-20 05:32:06,479 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 377 [2020-07-20 05:32:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:32:06,480 INFO L225 Difference]: With dead ends: 191 [2020-07-20 05:32:06,480 INFO L226 Difference]: Without dead ends: 187 [2020-07-20 05:32:06,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4679, Invalid=7977, Unknown=0, NotChecked=0, Total=12656 [2020-07-20 05:32:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-20 05:32:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-20 05:32:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-20 05:32:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2020-07-20 05:32:06,487 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 377 [2020-07-20 05:32:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:32:06,488 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2020-07-20 05:32:06,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-20 05:32:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2020-07-20 05:32:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-07-20 05:32:06,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:32:06,491 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:32:06,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:06,705 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:32:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:32:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2088040944, now seen corresponding path program 53 times [2020-07-20 05:32:06,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:32:06,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66881100] [2020-07-20 05:32:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:32:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-20 05:32:14,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66881100] [2020-07-20 05:32:14,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909954589] [2020-07-20 05:32:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@526cc4d2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:14,155 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@526cc4d2 issued 2 check-sat command(s) [2020-07-20 05:32:14,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:32:14,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 110 conjunts are in the unsatisfiable core [2020-07-20 05:32:14,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:32:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-20 05:32:14,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:32:14,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 60 [2020-07-20 05:32:14,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024251442] [2020-07-20 05:32:14,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-20 05:32:14,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:32:14,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-20 05:32:14,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=1937, Unknown=0, NotChecked=0, Total=3540 [2020-07-20 05:32:14,403 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand 60 states. [2020-07-20 05:32:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:32:16,021 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2020-07-20 05:32:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-07-20 05:32:16,022 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 384 [2020-07-20 05:32:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:32:16,024 INFO L225 Difference]: With dead ends: 194 [2020-07-20 05:32:16,024 INFO L226 Difference]: Without dead ends: 190 [2020-07-20 05:32:16,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2969 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4848, Invalid=8262, Unknown=0, NotChecked=0, Total=13110 [2020-07-20 05:32:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-20 05:32:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-07-20 05:32:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-20 05:32:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 196 transitions. [2020-07-20 05:32:16,033 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 196 transitions. Word has length 384 [2020-07-20 05:32:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:32:16,034 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 196 transitions. [2020-07-20 05:32:16,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-20 05:32:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 196 transitions. [2020-07-20 05:32:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-20 05:32:16,037 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:32:16,037 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:32:16,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-07-20 05:32:16,252 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:32:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:32:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1685456465, now seen corresponding path program 54 times [2020-07-20 05:32:16,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:32:16,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058933707] [2020-07-20 05:32:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:32:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-20 05:32:23,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058933707] [2020-07-20 05:32:23,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623092331] [2020-07-20 05:32:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3584234b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:23,260 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3584234b issued 2 check-sat command(s) [2020-07-20 05:32:23,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:32:23,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 112 conjunts are in the unsatisfiable core [2020-07-20 05:32:23,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:32:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-20 05:32:23,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:32:23,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-07-20 05:32:23,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741796] [2020-07-20 05:32:23,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-20 05:32:23,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:32:23,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-20 05:32:23,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1660, Invalid=2000, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 05:32:23,486 INFO L87 Difference]: Start difference. First operand 188 states and 196 transitions. Second operand 61 states. [2020-07-20 05:32:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:32:25,095 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2020-07-20 05:32:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-20 05:32:25,096 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 391 [2020-07-20 05:32:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:32:25,098 INFO L225 Difference]: With dead ends: 197 [2020-07-20 05:32:25,099 INFO L226 Difference]: Without dead ends: 193 [2020-07-20 05:32:25,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5020, Invalid=8552, Unknown=0, NotChecked=0, Total=13572 [2020-07-20 05:32:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-07-20 05:32:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2020-07-20 05:32:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-07-20 05:32:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2020-07-20 05:32:25,106 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 391 [2020-07-20 05:32:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:32:25,106 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2020-07-20 05:32:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-20 05:32:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2020-07-20 05:32:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-20 05:32:25,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:32:25,109 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:32:25,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-07-20 05:32:25,324 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:32:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:32:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1628873638, now seen corresponding path program 55 times [2020-07-20 05:32:25,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:32:25,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555037014] [2020-07-20 05:32:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:32:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-20 05:32:33,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555037014] [2020-07-20 05:32:33,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427674635] [2020-07-20 05:32:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2395ce1e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:33,439 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2395ce1e issued 2 check-sat command(s) [2020-07-20 05:32:33,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:32:33,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 114 conjunts are in the unsatisfiable core [2020-07-20 05:32:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:32:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-20 05:32:33,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:32:33,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 62 [2020-07-20 05:32:33,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453896701] [2020-07-20 05:32:33,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-20 05:32:33,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:32:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-20 05:32:33,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1718, Invalid=2064, Unknown=0, NotChecked=0, Total=3782 [2020-07-20 05:32:33,711 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand 62 states. [2020-07-20 05:32:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:32:35,588 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2020-07-20 05:32:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-20 05:32:35,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 398 [2020-07-20 05:32:35,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:32:35,591 INFO L225 Difference]: With dead ends: 200 [2020-07-20 05:32:35,591 INFO L226 Difference]: Without dead ends: 196 [2020-07-20 05:32:35,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5195, Invalid=8847, Unknown=0, NotChecked=0, Total=14042 [2020-07-20 05:32:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-20 05:32:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-20 05:32:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-20 05:32:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-07-20 05:32:35,601 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 398 [2020-07-20 05:32:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:32:35,602 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-07-20 05:32:35,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-20 05:32:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-07-20 05:32:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-07-20 05:32:35,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:32:35,606 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:32:35,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:35,820 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:32:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:32:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1214763067, now seen corresponding path program 56 times [2020-07-20 05:32:35,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:32:35,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900932781] [2020-07-20 05:32:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:32:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-20 05:32:45,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900932781] [2020-07-20 05:32:45,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296469924] [2020-07-20 05:32:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c151567 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:45,258 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c151567 issued 2 check-sat command(s) [2020-07-20 05:32:45,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:32:45,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 116 conjunts are in the unsatisfiable core [2020-07-20 05:32:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:32:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-20 05:32:45,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:32:45,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2020-07-20 05:32:45,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837231542] [2020-07-20 05:32:45,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-20 05:32:45,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:32:45,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-20 05:32:45,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1777, Invalid=2129, Unknown=0, NotChecked=0, Total=3906 [2020-07-20 05:32:45,558 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 63 states. [2020-07-20 05:32:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:32:47,476 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2020-07-20 05:32:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-20 05:32:47,477 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 405 [2020-07-20 05:32:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:32:47,480 INFO L225 Difference]: With dead ends: 203 [2020-07-20 05:32:47,480 INFO L226 Difference]: Without dead ends: 199 [2020-07-20 05:32:47,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5373, Invalid=9147, Unknown=0, NotChecked=0, Total=14520 [2020-07-20 05:32:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-20 05:32:47,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-07-20 05:32:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-07-20 05:32:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2020-07-20 05:32:47,492 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 405 [2020-07-20 05:32:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:32:47,493 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2020-07-20 05:32:47,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-20 05:32:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2020-07-20 05:32:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-20 05:32:47,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:32:47,497 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:32:47,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-07-20 05:32:47,709 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:32:47,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:32:47,710 INFO L82 PathProgramCache]: Analyzing trace with hash -383752764, now seen corresponding path program 57 times [2020-07-20 05:32:47,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:32:47,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145553593] [2020-07-20 05:32:47,711 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:32:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:32:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-20 05:32:58,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145553593] [2020-07-20 05:32:58,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61501686] [2020-07-20 05:32:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@14e58443 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:32:58,193 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@14e58443 issued 2 check-sat command(s) [2020-07-20 05:32:58,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:32:58,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 118 conjunts are in the unsatisfiable core [2020-07-20 05:32:58,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:32:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-20 05:32:58,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:32:58,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 64 [2020-07-20 05:32:58,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359171339] [2020-07-20 05:32:58,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-07-20 05:32:58,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:32:58,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-07-20 05:32:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1837, Invalid=2195, Unknown=0, NotChecked=0, Total=4032 [2020-07-20 05:32:58,469 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 64 states. [2020-07-20 05:33:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:33:00,336 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2020-07-20 05:33:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-20 05:33:00,337 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 412 [2020-07-20 05:33:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:33:00,339 INFO L225 Difference]: With dead ends: 206 [2020-07-20 05:33:00,339 INFO L226 Difference]: Without dead ends: 202 [2020-07-20 05:33:00,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5554, Invalid=9452, Unknown=0, NotChecked=0, Total=15006 [2020-07-20 05:33:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-20 05:33:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-07-20 05:33:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-20 05:33:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2020-07-20 05:33:00,350 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 412 [2020-07-20 05:33:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:33:00,351 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2020-07-20 05:33:00,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-07-20 05:33:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2020-07-20 05:33:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-07-20 05:33:00,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:33:00,355 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:33:00,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:00,569 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:33:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:33:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1310199515, now seen corresponding path program 58 times [2020-07-20 05:33:00,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:33:00,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42306090] [2020-07-20 05:33:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:33:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-20 05:33:11,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42306090] [2020-07-20 05:33:11,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774796075] [2020-07-20 05:33:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ce12bff No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:11,413 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ce12bff issued 2 check-sat command(s) [2020-07-20 05:33:11,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:33:11,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 120 conjunts are in the unsatisfiable core [2020-07-20 05:33:11,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:33:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-20 05:33:11,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:33:11,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2020-07-20 05:33:11,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253802688] [2020-07-20 05:33:11,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-20 05:33:11,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:33:11,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-20 05:33:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1898, Invalid=2262, Unknown=0, NotChecked=0, Total=4160 [2020-07-20 05:33:11,711 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand 65 states. [2020-07-20 05:33:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:33:13,648 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2020-07-20 05:33:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-20 05:33:13,649 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 419 [2020-07-20 05:33:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:33:13,651 INFO L225 Difference]: With dead ends: 209 [2020-07-20 05:33:13,651 INFO L226 Difference]: Without dead ends: 205 [2020-07-20 05:33:13,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5738, Invalid=9762, Unknown=0, NotChecked=0, Total=15500 [2020-07-20 05:33:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-20 05:33:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-20 05:33:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-20 05:33:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2020-07-20 05:33:13,660 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 419 [2020-07-20 05:33:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:33:13,661 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2020-07-20 05:33:13,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-20 05:33:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2020-07-20 05:33:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-07-20 05:33:13,664 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:33:13,664 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:33:13,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-07-20 05:33:13,874 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:33:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:33:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash -783714770, now seen corresponding path program 59 times [2020-07-20 05:33:13,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:33:13,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408282255] [2020-07-20 05:33:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:33:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-20 05:33:24,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408282255] [2020-07-20 05:33:24,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000986254] [2020-07-20 05:33:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bffeb1f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:25,044 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1bffeb1f issued 2 check-sat command(s) [2020-07-20 05:33:25,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:33:25,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 122 conjunts are in the unsatisfiable core [2020-07-20 05:33:25,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:33:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-20 05:33:25,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:33:25,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 66 [2020-07-20 05:33:25,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141893174] [2020-07-20 05:33:25,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-20 05:33:25,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:33:25,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-20 05:33:25,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1960, Invalid=2330, Unknown=0, NotChecked=0, Total=4290 [2020-07-20 05:33:25,433 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 66 states. [2020-07-20 05:33:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:33:27,436 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2020-07-20 05:33:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-07-20 05:33:27,437 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 426 [2020-07-20 05:33:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:33:27,439 INFO L225 Difference]: With dead ends: 212 [2020-07-20 05:33:27,439 INFO L226 Difference]: Without dead ends: 208 [2020-07-20 05:33:27,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3659 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5925, Invalid=10077, Unknown=0, NotChecked=0, Total=16002 [2020-07-20 05:33:27,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-20 05:33:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2020-07-20 05:33:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-20 05:33:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2020-07-20 05:33:27,449 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 426 [2020-07-20 05:33:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:33:27,450 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 214 transitions. [2020-07-20 05:33:27,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-20 05:33:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 214 transitions. [2020-07-20 05:33:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-20 05:33:27,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:33:27,453 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:33:27,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:27,655 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:33:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:33:27,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1486211343, now seen corresponding path program 60 times [2020-07-20 05:33:27,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:33:27,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779448836] [2020-07-20 05:33:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:33:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-20 05:33:38,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779448836] [2020-07-20 05:33:38,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534330573] [2020-07-20 05:33:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2a9e85a4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:38,895 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2a9e85a4 issued 2 check-sat command(s) [2020-07-20 05:33:38,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:33:38,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 124 conjunts are in the unsatisfiable core [2020-07-20 05:33:38,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:33:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-20 05:33:39,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:33:39,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2020-07-20 05:33:39,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696311185] [2020-07-20 05:33:39,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-20 05:33:39,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:33:39,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-20 05:33:39,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2023, Invalid=2399, Unknown=0, NotChecked=0, Total=4422 [2020-07-20 05:33:39,167 INFO L87 Difference]: Start difference. First operand 206 states and 214 transitions. Second operand 67 states. [2020-07-20 05:33:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:33:41,083 INFO L93 Difference]: Finished difference Result 215 states and 225 transitions. [2020-07-20 05:33:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-20 05:33:41,084 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 433 [2020-07-20 05:33:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:33:41,086 INFO L225 Difference]: With dead ends: 215 [2020-07-20 05:33:41,086 INFO L226 Difference]: Without dead ends: 211 [2020-07-20 05:33:41,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3781 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6115, Invalid=10397, Unknown=0, NotChecked=0, Total=16512 [2020-07-20 05:33:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-20 05:33:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-07-20 05:33:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-07-20 05:33:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 217 transitions. [2020-07-20 05:33:41,096 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 217 transitions. Word has length 433 [2020-07-20 05:33:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:33:41,096 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 217 transitions. [2020-07-20 05:33:41,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-20 05:33:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 217 transitions. [2020-07-20 05:33:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-07-20 05:33:41,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:33:41,099 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:33:41,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-07-20 05:33:41,315 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:33:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:33:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1191973480, now seen corresponding path program 61 times [2020-07-20 05:33:41,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:33:41,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053931952] [2020-07-20 05:33:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:33:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-20 05:33:53,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053931952] [2020-07-20 05:33:53,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858165185] [2020-07-20 05:33:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@aea253f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:54,018 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@aea253f issued 2 check-sat command(s) [2020-07-20 05:33:54,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:33:54,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 126 conjunts are in the unsatisfiable core [2020-07-20 05:33:54,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:33:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-20 05:33:54,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:33:54,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 68 [2020-07-20 05:33:54,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524804454] [2020-07-20 05:33:54,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-20 05:33:54,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:33:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-20 05:33:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2087, Invalid=2469, Unknown=0, NotChecked=0, Total=4556 [2020-07-20 05:33:54,345 INFO L87 Difference]: Start difference. First operand 209 states and 217 transitions. Second operand 68 states. [2020-07-20 05:33:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:33:56,654 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2020-07-20 05:33:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-20 05:33:56,655 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 440 [2020-07-20 05:33:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:33:56,657 INFO L225 Difference]: With dead ends: 218 [2020-07-20 05:33:56,657 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 05:33:56,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3905 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6308, Invalid=10722, Unknown=0, NotChecked=0, Total=17030 [2020-07-20 05:33:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 05:33:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-20 05:33:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-20 05:33:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2020-07-20 05:33:56,668 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 440 [2020-07-20 05:33:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:33:56,669 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2020-07-20 05:33:56,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-20 05:33:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2020-07-20 05:33:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-20 05:33:56,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:33:56,675 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:33:56,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:33:56,890 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:33:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:33:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1349564409, now seen corresponding path program 62 times [2020-07-20 05:33:56,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:33:56,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579982368] [2020-07-20 05:33:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:33:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:33:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-20 05:34:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579982368] [2020-07-20 05:34:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413983196] [2020-07-20 05:34:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f585b65 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:34:09,084 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f585b65 issued 2 check-sat command(s) [2020-07-20 05:34:09,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:34:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 128 conjunts are in the unsatisfiable core [2020-07-20 05:34:09,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:34:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-20 05:34:09,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:34:09,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2020-07-20 05:34:09,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525527692] [2020-07-20 05:34:09,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-20 05:34:09,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:34:09,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-20 05:34:09,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2152, Invalid=2540, Unknown=0, NotChecked=0, Total=4692 [2020-07-20 05:34:09,374 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand 69 states. [2020-07-20 05:34:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:34:11,543 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2020-07-20 05:34:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-20 05:34:11,544 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 447 [2020-07-20 05:34:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:34:11,547 INFO L225 Difference]: With dead ends: 221 [2020-07-20 05:34:11,547 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 05:34:11,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6504, Invalid=11052, Unknown=0, NotChecked=0, Total=17556 [2020-07-20 05:34:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 05:34:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-07-20 05:34:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-20 05:34:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 223 transitions. [2020-07-20 05:34:11,555 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 223 transitions. Word has length 447 [2020-07-20 05:34:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:34:11,555 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 223 transitions. [2020-07-20 05:34:11,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-20 05:34:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 223 transitions. [2020-07-20 05:34:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-07-20 05:34:11,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:34:11,558 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:34:11,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-07-20 05:34:11,764 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:34:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:34:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 252652546, now seen corresponding path program 63 times [2020-07-20 05:34:11,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:34:11,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772765388] [2020-07-20 05:34:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:34:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-20 05:34:22,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772765388] [2020-07-20 05:34:22,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179840590] [2020-07-20 05:34:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5805bc6f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:34:22,443 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5805bc6f issued 2 check-sat command(s) [2020-07-20 05:34:22,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:34:22,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 130 conjunts are in the unsatisfiable core [2020-07-20 05:34:22,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:34:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-20 05:34:22,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:34:22,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2020-07-20 05:34:22,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162894552] [2020-07-20 05:34:22,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-07-20 05:34:22,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:34:22,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-07-20 05:34:22,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2218, Invalid=2612, Unknown=0, NotChecked=0, Total=4830 [2020-07-20 05:34:22,822 INFO L87 Difference]: Start difference. First operand 215 states and 223 transitions. Second operand 70 states. [2020-07-20 05:34:25,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:34:25,027 INFO L93 Difference]: Finished difference Result 224 states and 234 transitions. [2020-07-20 05:34:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-20 05:34:25,028 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 454 [2020-07-20 05:34:25,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:34:25,030 INFO L225 Difference]: With dead ends: 224 [2020-07-20 05:34:25,030 INFO L226 Difference]: Without dead ends: 220 [2020-07-20 05:34:25,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6703, Invalid=11387, Unknown=0, NotChecked=0, Total=18090 [2020-07-20 05:34:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-20 05:34:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2020-07-20 05:34:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-20 05:34:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-07-20 05:34:25,039 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 454 [2020-07-20 05:34:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:34:25,040 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-07-20 05:34:25,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-07-20 05:34:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-07-20 05:34:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-20 05:34:25,043 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:34:25,043 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:34:25,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:34:25,258 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:34:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:34:25,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1411899933, now seen corresponding path program 64 times [2020-07-20 05:34:25,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:34:25,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728441769] [2020-07-20 05:34:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:34:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-20 05:34:36,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728441769] [2020-07-20 05:34:36,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743941006] [2020-07-20 05:34:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d7a8726 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:34:36,755 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d7a8726 issued 2 check-sat command(s) [2020-07-20 05:34:36,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:34:36,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 132 conjunts are in the unsatisfiable core [2020-07-20 05:34:36,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:34:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-20 05:34:37,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:34:37,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2020-07-20 05:34:37,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509156768] [2020-07-20 05:34:37,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-20 05:34:37,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:34:37,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-20 05:34:37,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2285, Invalid=2685, Unknown=0, NotChecked=0, Total=4970 [2020-07-20 05:34:37,092 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 71 states. [2020-07-20 05:34:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:34:39,489 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2020-07-20 05:34:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-20 05:34:39,490 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 461 [2020-07-20 05:34:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:34:39,492 INFO L225 Difference]: With dead ends: 227 [2020-07-20 05:34:39,492 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 05:34:39,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6905, Invalid=11727, Unknown=0, NotChecked=0, Total=18632 [2020-07-20 05:34:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 05:34:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-20 05:34:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-20 05:34:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2020-07-20 05:34:39,501 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 461 [2020-07-20 05:34:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:34:39,502 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2020-07-20 05:34:39,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-20 05:34:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2020-07-20 05:34:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-07-20 05:34:39,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:34:39,505 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:34:39,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-07-20 05:34:39,719 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:34:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:34:39,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1911198060, now seen corresponding path program 65 times [2020-07-20 05:34:39,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:34:39,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985669121] [2020-07-20 05:34:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:34:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-20 05:34:50,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985669121] [2020-07-20 05:34:50,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110535668] [2020-07-20 05:34:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d242ca No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:34:51,057 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d242ca issued 2 check-sat command(s) [2020-07-20 05:34:51,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:34:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 134 conjunts are in the unsatisfiable core [2020-07-20 05:34:51,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:34:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-20 05:34:51,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:34:51,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2020-07-20 05:34:51,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096366492] [2020-07-20 05:34:51,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-07-20 05:34:51,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:34:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-07-20 05:34:51,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=2759, Unknown=0, NotChecked=0, Total=5112 [2020-07-20 05:34:51,375 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand 72 states. [2020-07-20 05:34:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:34:53,750 INFO L93 Difference]: Finished difference Result 230 states and 240 transitions. [2020-07-20 05:34:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-07-20 05:34:53,751 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 468 [2020-07-20 05:34:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:34:53,753 INFO L225 Difference]: With dead ends: 230 [2020-07-20 05:34:53,753 INFO L226 Difference]: Without dead ends: 226 [2020-07-20 05:34:53,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4421 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7110, Invalid=12072, Unknown=0, NotChecked=0, Total=19182 [2020-07-20 05:34:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-20 05:34:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2020-07-20 05:34:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-20 05:34:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 232 transitions. [2020-07-20 05:34:53,761 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 232 transitions. Word has length 468 [2020-07-20 05:34:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:34:53,761 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 232 transitions. [2020-07-20 05:34:53,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-07-20 05:34:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 232 transitions. [2020-07-20 05:34:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-07-20 05:34:53,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:34:53,765 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:34:53,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-07-20 05:34:53,977 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:34:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:34:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash -495672013, now seen corresponding path program 66 times [2020-07-20 05:34:53,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:34:53,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664400502] [2020-07-20 05:34:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:34:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:34:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-20 05:35:05,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664400502] [2020-07-20 05:35:05,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236609625] [2020-07-20 05:35:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e31b43e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:35:05,768 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e31b43e issued 2 check-sat command(s) [2020-07-20 05:35:05,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:35:05,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 136 conjunts are in the unsatisfiable core [2020-07-20 05:35:05,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:35:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-20 05:35:06,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:35:06,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2020-07-20 05:35:06,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321392088] [2020-07-20 05:35:06,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-20 05:35:06,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:35:06,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-20 05:35:06,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2422, Invalid=2834, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 05:35:06,066 INFO L87 Difference]: Start difference. First operand 224 states and 232 transitions. Second operand 73 states. [2020-07-20 05:35:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:35:08,410 INFO L93 Difference]: Finished difference Result 233 states and 243 transitions. [2020-07-20 05:35:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-20 05:35:08,411 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 475 [2020-07-20 05:35:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:35:08,413 INFO L225 Difference]: With dead ends: 233 [2020-07-20 05:35:08,413 INFO L226 Difference]: Without dead ends: 229 [2020-07-20 05:35:08,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7318, Invalid=12422, Unknown=0, NotChecked=0, Total=19740 [2020-07-20 05:35:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-20 05:35:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-07-20 05:35:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-20 05:35:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2020-07-20 05:35:08,422 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 475 [2020-07-20 05:35:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:35:08,423 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2020-07-20 05:35:08,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-20 05:35:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2020-07-20 05:35:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-07-20 05:35:08,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:35:08,426 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:35:08,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-07-20 05:35:08,641 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:35:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:35:08,642 INFO L82 PathProgramCache]: Analyzing trace with hash -785023530, now seen corresponding path program 67 times [2020-07-20 05:35:08,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:35:08,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642008228] [2020-07-20 05:35:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:35:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-20 05:35:22,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642008228] [2020-07-20 05:35:22,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752027828] [2020-07-20 05:35:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d10c04f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:35:22,316 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d10c04f issued 2 check-sat command(s) [2020-07-20 05:35:22,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:35:22,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 138 conjunts are in the unsatisfiable core [2020-07-20 05:35:22,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:35:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-20 05:35:22,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:35:22,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 74 [2020-07-20 05:35:22,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939997773] [2020-07-20 05:35:22,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-20 05:35:22,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:35:22,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-20 05:35:22,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2492, Invalid=2910, Unknown=0, NotChecked=0, Total=5402 [2020-07-20 05:35:22,665 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 74 states. [2020-07-20 05:35:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:35:25,293 INFO L93 Difference]: Finished difference Result 236 states and 246 transitions. [2020-07-20 05:35:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-20 05:35:25,294 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 482 [2020-07-20 05:35:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:35:25,297 INFO L225 Difference]: With dead ends: 236 [2020-07-20 05:35:25,297 INFO L226 Difference]: Without dead ends: 232 [2020-07-20 05:35:25,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4691 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7529, Invalid=12777, Unknown=0, NotChecked=0, Total=20306 [2020-07-20 05:35:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-20 05:35:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-20 05:35:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-20 05:35:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2020-07-20 05:35:25,305 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 482 [2020-07-20 05:35:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:35:25,305 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 238 transitions. [2020-07-20 05:35:25,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-20 05:35:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 238 transitions. [2020-07-20 05:35:25,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-20 05:35:25,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:35:25,309 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:35:25,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:35:25,510 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:35:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:35:25,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1700147529, now seen corresponding path program 68 times [2020-07-20 05:35:25,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:35:25,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318012715] [2020-07-20 05:35:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:35:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-20 05:35:39,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318012715] [2020-07-20 05:35:39,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653200609] [2020-07-20 05:35:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@245928ab No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:35:39,362 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@245928ab issued 2 check-sat command(s) [2020-07-20 05:35:39,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:35:39,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 140 conjunts are in the unsatisfiable core [2020-07-20 05:35:39,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:35:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-20 05:35:39,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:35:39,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2020-07-20 05:35:39,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116670769] [2020-07-20 05:35:39,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-20 05:35:39,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:35:39,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-20 05:35:39,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2563, Invalid=2987, Unknown=0, NotChecked=0, Total=5550 [2020-07-20 05:35:39,687 INFO L87 Difference]: Start difference. First operand 230 states and 238 transitions. Second operand 75 states. [2020-07-20 05:35:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:35:42,219 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2020-07-20 05:35:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-20 05:35:42,220 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 489 [2020-07-20 05:35:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:35:42,222 INFO L225 Difference]: With dead ends: 239 [2020-07-20 05:35:42,222 INFO L226 Difference]: Without dead ends: 235 [2020-07-20 05:35:42,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7743, Invalid=13137, Unknown=0, NotChecked=0, Total=20880 [2020-07-20 05:35:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-20 05:35:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2020-07-20 05:35:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-07-20 05:35:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 241 transitions. [2020-07-20 05:35:42,231 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 241 transitions. Word has length 489 [2020-07-20 05:35:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:35:42,231 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 241 transitions. [2020-07-20 05:35:42,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-20 05:35:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 241 transitions. [2020-07-20 05:35:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-07-20 05:35:42,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:35:42,235 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:35:42,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-07-20 05:35:42,437 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:35:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:35:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1879092928, now seen corresponding path program 69 times [2020-07-20 05:35:42,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:35:42,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106351538] [2020-07-20 05:35:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:35:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:35:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-20 05:35:57,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106351538] [2020-07-20 05:35:57,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623559857] [2020-07-20 05:35:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4f786806 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:35:57,977 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4f786806 issued 2 check-sat command(s) [2020-07-20 05:35:57,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:35:57,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 142 conjunts are in the unsatisfiable core [2020-07-20 05:35:57,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:35:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-20 05:35:58,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:35:58,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 76 [2020-07-20 05:35:58,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586328226] [2020-07-20 05:35:58,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-20 05:35:58,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:35:58,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-20 05:35:58,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2635, Invalid=3065, Unknown=0, NotChecked=0, Total=5700 [2020-07-20 05:35:58,376 INFO L87 Difference]: Start difference. First operand 233 states and 241 transitions. Second operand 76 states. [2020-07-20 05:36:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:36:01,152 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2020-07-20 05:36:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-20 05:36:01,153 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 496 [2020-07-20 05:36:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:36:01,156 INFO L225 Difference]: With dead ends: 242 [2020-07-20 05:36:01,156 INFO L226 Difference]: Without dead ends: 238 [2020-07-20 05:36:01,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=7960, Invalid=13502, Unknown=0, NotChecked=0, Total=21462 [2020-07-20 05:36:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-20 05:36:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-07-20 05:36:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-20 05:36:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 244 transitions. [2020-07-20 05:36:01,166 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 244 transitions. Word has length 496 [2020-07-20 05:36:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:36:01,167 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 244 transitions. [2020-07-20 05:36:01,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-20 05:36:01,167 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 244 transitions. [2020-07-20 05:36:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-20 05:36:01,170 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:36:01,171 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:36:01,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:36:01,372 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:36:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:36:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash 55387743, now seen corresponding path program 70 times [2020-07-20 05:36:01,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:36:01,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003630651] [2020-07-20 05:36:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:36:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-20 05:36:19,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003630651] [2020-07-20 05:36:19,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528294498] [2020-07-20 05:36:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75261ae2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:36:19,359 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75261ae2 issued 2 check-sat command(s) [2020-07-20 05:36:19,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:36:19,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 144 conjunts are in the unsatisfiable core [2020-07-20 05:36:19,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:36:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-20 05:36:19,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:36:19,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2020-07-20 05:36:19,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963065549] [2020-07-20 05:36:19,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-20 05:36:19,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:36:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-20 05:36:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2708, Invalid=3144, Unknown=0, NotChecked=0, Total=5852 [2020-07-20 05:36:19,827 INFO L87 Difference]: Start difference. First operand 236 states and 244 transitions. Second operand 77 states. [2020-07-20 05:36:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:36:22,663 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2020-07-20 05:36:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-20 05:36:22,664 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 503 [2020-07-20 05:36:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:36:22,666 INFO L225 Difference]: With dead ends: 245 [2020-07-20 05:36:22,667 INFO L226 Difference]: Without dead ends: 241 [2020-07-20 05:36:22,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5111 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=8180, Invalid=13872, Unknown=0, NotChecked=0, Total=22052 [2020-07-20 05:36:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-20 05:36:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-20 05:36:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-20 05:36:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 247 transitions. [2020-07-20 05:36:22,682 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 247 transitions. Word has length 503 [2020-07-20 05:36:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:36:22,683 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 247 transitions. [2020-07-20 05:36:22,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-20 05:36:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 247 transitions. [2020-07-20 05:36:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-07-20 05:36:22,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:36:22,688 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:36:22,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2020-07-20 05:36:22,901 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:36:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:36:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1497928790, now seen corresponding path program 71 times [2020-07-20 05:36:22,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:36:22,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98512542] [2020-07-20 05:36:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:36:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-20 05:36:41,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98512542] [2020-07-20 05:36:41,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497571705] [2020-07-20 05:36:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55f30298 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:36:41,442 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55f30298 issued 2 check-sat command(s) [2020-07-20 05:36:41,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:36:41,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 146 conjunts are in the unsatisfiable core [2020-07-20 05:36:41,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:36:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-20 05:36:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:36:41,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 78 [2020-07-20 05:36:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058949778] [2020-07-20 05:36:41,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-07-20 05:36:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:36:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-07-20 05:36:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2782, Invalid=3224, Unknown=0, NotChecked=0, Total=6006 [2020-07-20 05:36:41,921 INFO L87 Difference]: Start difference. First operand 239 states and 247 transitions. Second operand 78 states. [2020-07-20 05:36:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:36:45,084 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2020-07-20 05:36:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-20 05:36:45,085 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 510 [2020-07-20 05:36:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:36:45,088 INFO L225 Difference]: With dead ends: 248 [2020-07-20 05:36:45,088 INFO L226 Difference]: Without dead ends: 244 [2020-07-20 05:36:45,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5255 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8403, Invalid=14247, Unknown=0, NotChecked=0, Total=22650 [2020-07-20 05:36:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-20 05:36:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-07-20 05:36:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-07-20 05:36:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-07-20 05:36:45,100 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 510 [2020-07-20 05:36:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:36:45,101 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-07-20 05:36:45,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-07-20 05:36:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-07-20 05:36:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-07-20 05:36:45,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:36:45,105 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:36:45,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:36:45,307 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:36:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:36:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1551508597, now seen corresponding path program 72 times [2020-07-20 05:36:45,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:36:45,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237637703] [2020-07-20 05:36:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:36:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:36:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-20 05:37:05,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237637703] [2020-07-20 05:37:05,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383349975] [2020-07-20 05:37:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15da44a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:37:05,230 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15da44a issued 2 check-sat command(s) [2020-07-20 05:37:05,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:37:05,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 148 conjunts are in the unsatisfiable core [2020-07-20 05:37:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:37:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-20 05:37:05,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:37:05,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2020-07-20 05:37:05,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500296591] [2020-07-20 05:37:05,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-20 05:37:05,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:37:05,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-20 05:37:05,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2857, Invalid=3305, Unknown=0, NotChecked=0, Total=6162 [2020-07-20 05:37:05,648 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 79 states. [2020-07-20 05:37:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:37:08,695 INFO L93 Difference]: Finished difference Result 251 states and 261 transitions. [2020-07-20 05:37:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-20 05:37:08,696 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 517 [2020-07-20 05:37:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:37:08,699 INFO L225 Difference]: With dead ends: 251 [2020-07-20 05:37:08,699 INFO L226 Difference]: Without dead ends: 247 [2020-07-20 05:37:08,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5401 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8629, Invalid=14627, Unknown=0, NotChecked=0, Total=23256 [2020-07-20 05:37:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-07-20 05:37:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-07-20 05:37:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-20 05:37:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions. [2020-07-20 05:37:08,711 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 517 [2020-07-20 05:37:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:37:08,712 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 253 transitions. [2020-07-20 05:37:08,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-20 05:37:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 253 transitions. [2020-07-20 05:37:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-20 05:37:08,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:37:08,715 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:37:08,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:37:08,917 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:37:08,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:37:08,918 INFO L82 PathProgramCache]: Analyzing trace with hash -986895084, now seen corresponding path program 73 times [2020-07-20 05:37:08,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:37:08,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681061084] [2020-07-20 05:37:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:37:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-20 05:37:27,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681061084] [2020-07-20 05:37:27,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535786934] [2020-07-20 05:37:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f765f2d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:37:27,883 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f765f2d issued 2 check-sat command(s) [2020-07-20 05:37:27,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:37:27,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 150 conjunts are in the unsatisfiable core [2020-07-20 05:37:27,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:37:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-20 05:37:28,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:37:28,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 80 [2020-07-20 05:37:28,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912447217] [2020-07-20 05:37:28,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-20 05:37:28,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:37:28,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-20 05:37:28,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2933, Invalid=3387, Unknown=0, NotChecked=0, Total=6320 [2020-07-20 05:37:28,326 INFO L87 Difference]: Start difference. First operand 245 states and 253 transitions. Second operand 80 states. [2020-07-20 05:37:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:37:31,542 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2020-07-20 05:37:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-20 05:37:31,544 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 524 [2020-07-20 05:37:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:37:31,547 INFO L225 Difference]: With dead ends: 254 [2020-07-20 05:37:31,547 INFO L226 Difference]: Without dead ends: 250 [2020-07-20 05:37:31,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8858, Invalid=15012, Unknown=0, NotChecked=0, Total=23870 [2020-07-20 05:37:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-20 05:37:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-20 05:37:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-20 05:37:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 256 transitions. [2020-07-20 05:37:31,560 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 256 transitions. Word has length 524 [2020-07-20 05:37:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:37:31,561 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 256 transitions. [2020-07-20 05:37:31,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-20 05:37:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 256 transitions. [2020-07-20 05:37:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-07-20 05:37:31,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:37:31,567 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:37:31,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:37:31,782 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:37:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:37:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash -392311925, now seen corresponding path program 74 times [2020-07-20 05:37:31,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:37:31,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328141992] [2020-07-20 05:37:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:37:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-20 05:37:51,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328141992] [2020-07-20 05:37:51,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37557179] [2020-07-20 05:37:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e798753 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:37:51,963 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e798753 issued 2 check-sat command(s) [2020-07-20 05:37:51,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:37:51,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 152 conjunts are in the unsatisfiable core [2020-07-20 05:37:51,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:37:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-20 05:37:52,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:37:52,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2020-07-20 05:37:52,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549234002] [2020-07-20 05:37:52,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-20 05:37:52,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:37:52,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-20 05:37:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3010, Invalid=3470, Unknown=0, NotChecked=0, Total=6480 [2020-07-20 05:37:52,317 INFO L87 Difference]: Start difference. First operand 248 states and 256 transitions. Second operand 81 states. [2020-07-20 05:37:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:37:55,616 INFO L93 Difference]: Finished difference Result 257 states and 267 transitions. [2020-07-20 05:37:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-20 05:37:55,618 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 531 [2020-07-20 05:37:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:37:55,620 INFO L225 Difference]: With dead ends: 257 [2020-07-20 05:37:55,620 INFO L226 Difference]: Without dead ends: 253 [2020-07-20 05:37:55,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5699 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=9090, Invalid=15402, Unknown=0, NotChecked=0, Total=24492 [2020-07-20 05:37:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-20 05:37:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2020-07-20 05:37:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-07-20 05:37:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2020-07-20 05:37:55,637 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 531 [2020-07-20 05:37:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:37:55,638 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2020-07-20 05:37:55,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-20 05:37:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2020-07-20 05:37:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-07-20 05:37:55,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:37:55,644 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:37:55,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-07-20 05:37:55,858 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:37:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:37:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1955591550, now seen corresponding path program 75 times [2020-07-20 05:37:55,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:37:55,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237695873] [2020-07-20 05:37:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:37:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:37:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-20 05:38:12,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237695873] [2020-07-20 05:38:12,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629232180] [2020-07-20 05:38:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58a39dc1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:38:13,079 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58a39dc1 issued 2 check-sat command(s) [2020-07-20 05:38:13,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:38:13,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 154 conjunts are in the unsatisfiable core [2020-07-20 05:38:13,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:38:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-20 05:38:13,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:38:13,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 82 [2020-07-20 05:38:13,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756527918] [2020-07-20 05:38:13,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-07-20 05:38:13,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:38:13,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-07-20 05:38:13,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3088, Invalid=3554, Unknown=0, NotChecked=0, Total=6642 [2020-07-20 05:38:13,450 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand 82 states. [2020-07-20 05:38:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:38:16,748 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2020-07-20 05:38:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-20 05:38:16,749 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 538 [2020-07-20 05:38:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:38:16,751 INFO L225 Difference]: With dead ends: 260 [2020-07-20 05:38:16,751 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 05:38:16,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5851 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9325, Invalid=15797, Unknown=0, NotChecked=0, Total=25122 [2020-07-20 05:38:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 05:38:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2020-07-20 05:38:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-20 05:38:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 262 transitions. [2020-07-20 05:38:16,760 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 262 transitions. Word has length 538 [2020-07-20 05:38:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:38:16,761 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 262 transitions. [2020-07-20 05:38:16,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-07-20 05:38:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 262 transitions. [2020-07-20 05:38:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-07-20 05:38:16,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:38:16,764 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:38:16,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:38:16,965 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:38:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:38:16,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1427684257, now seen corresponding path program 76 times [2020-07-20 05:38:16,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:38:16,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314069574] [2020-07-20 05:38:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:38:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-20 05:38:34,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314069574] [2020-07-20 05:38:34,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532922818] [2020-07-20 05:38:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c97cf31 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:38:34,700 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c97cf31 issued 2 check-sat command(s) [2020-07-20 05:38:34,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:38:34,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 156 conjunts are in the unsatisfiable core [2020-07-20 05:38:34,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:38:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-20 05:38:35,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:38:35,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2020-07-20 05:38:35,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403984277] [2020-07-20 05:38:35,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-20 05:38:35,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:38:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-20 05:38:35,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3167, Invalid=3639, Unknown=0, NotChecked=0, Total=6806 [2020-07-20 05:38:35,078 INFO L87 Difference]: Start difference. First operand 254 states and 262 transitions. Second operand 83 states. [2020-07-20 05:38:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:38:38,444 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2020-07-20 05:38:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-20 05:38:38,445 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 545 [2020-07-20 05:38:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:38:38,448 INFO L225 Difference]: With dead ends: 263 [2020-07-20 05:38:38,448 INFO L226 Difference]: Without dead ends: 259 [2020-07-20 05:38:38,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6005 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9563, Invalid=16197, Unknown=0, NotChecked=0, Total=25760 [2020-07-20 05:38:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-20 05:38:38,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-20 05:38:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-20 05:38:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2020-07-20 05:38:38,456 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 545 [2020-07-20 05:38:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:38:38,456 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 265 transitions. [2020-07-20 05:38:38,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-20 05:38:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 265 transitions. [2020-07-20 05:38:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-07-20 05:38:38,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:38:38,459 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:38:38,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:38:38,675 INFO L427 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:38:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:38:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash 963585256, now seen corresponding path program 77 times [2020-07-20 05:38:38,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:38:38,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201648642] [2020-07-20 05:38:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:38:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:38:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-20 05:38:56,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201648642] [2020-07-20 05:38:56,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112441892] [2020-07-20 05:38:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f079035 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:38:56,482 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f079035 issued 2 check-sat command(s) [2020-07-20 05:38:56,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:38:56,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 158 conjunts are in the unsatisfiable core [2020-07-20 05:38:56,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:38:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-20 05:38:56,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:38:56,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 84 [2020-07-20 05:38:56,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029676151] [2020-07-20 05:38:56,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-07-20 05:38:56,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:38:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-07-20 05:38:56,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3247, Invalid=3725, Unknown=0, NotChecked=0, Total=6972 [2020-07-20 05:38:56,912 INFO L87 Difference]: Start difference. First operand 257 states and 265 transitions. Second operand 84 states. [2020-07-20 05:39:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:39:00,334 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2020-07-20 05:39:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-07-20 05:39:00,336 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 552 [2020-07-20 05:39:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:39:00,338 INFO L225 Difference]: With dead ends: 266 [2020-07-20 05:39:00,338 INFO L226 Difference]: Without dead ends: 262 [2020-07-20 05:39:00,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=9804, Invalid=16602, Unknown=0, NotChecked=0, Total=26406 [2020-07-20 05:39:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-07-20 05:39:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-07-20 05:39:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-20 05:39:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 268 transitions. [2020-07-20 05:39:00,346 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 268 transitions. Word has length 552 [2020-07-20 05:39:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:39:00,347 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 268 transitions. [2020-07-20 05:39:00,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-07-20 05:39:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 268 transitions. [2020-07-20 05:39:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-07-20 05:39:00,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:39:00,351 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:39:00,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-07-20 05:39:00,565 INFO L427 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:39:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:39:00,566 INFO L82 PathProgramCache]: Analyzing trace with hash -487877449, now seen corresponding path program 78 times [2020-07-20 05:39:00,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:39:00,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599838720] [2020-07-20 05:39:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:39:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-20 05:39:19,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599838720] [2020-07-20 05:39:19,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345538138] [2020-07-20 05:39:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@acac9d1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:39:19,246 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@acac9d1 issued 2 check-sat command(s) [2020-07-20 05:39:19,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:39:19,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 160 conjunts are in the unsatisfiable core [2020-07-20 05:39:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:39:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-20 05:39:19,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:39:19,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2020-07-20 05:39:19,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454047059] [2020-07-20 05:39:19,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-20 05:39:19,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:39:19,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-20 05:39:19,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3328, Invalid=3812, Unknown=0, NotChecked=0, Total=7140 [2020-07-20 05:39:19,647 INFO L87 Difference]: Start difference. First operand 260 states and 268 transitions. Second operand 85 states. [2020-07-20 05:39:23,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:39:23,248 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2020-07-20 05:39:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-20 05:39:23,249 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 559 [2020-07-20 05:39:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:39:23,252 INFO L225 Difference]: With dead ends: 269 [2020-07-20 05:39:23,252 INFO L226 Difference]: Without dead ends: 265 [2020-07-20 05:39:23,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6319 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=10048, Invalid=17012, Unknown=0, NotChecked=0, Total=27060 [2020-07-20 05:39:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-20 05:39:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2020-07-20 05:39:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-07-20 05:39:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 271 transitions. [2020-07-20 05:39:23,261 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 271 transitions. Word has length 559 [2020-07-20 05:39:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:39:23,262 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 271 transitions. [2020-07-20 05:39:23,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-20 05:39:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 271 transitions. [2020-07-20 05:39:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-07-20 05:39:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:39:23,265 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:39:23,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-07-20 05:39:23,466 INFO L427 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:39:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:39:23,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1246094510, now seen corresponding path program 79 times [2020-07-20 05:39:23,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:39:23,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795670479] [2020-07-20 05:39:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:39:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-20 05:39:42,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795670479] [2020-07-20 05:39:42,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379394785] [2020-07-20 05:39:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@57cf7628 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:39:42,740 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@57cf7628 issued 2 check-sat command(s) [2020-07-20 05:39:42,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:39:42,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 162 conjunts are in the unsatisfiable core [2020-07-20 05:39:42,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:39:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-20 05:39:43,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:39:43,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 86 [2020-07-20 05:39:43,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256239394] [2020-07-20 05:39:43,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-20 05:39:43,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:39:43,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-20 05:39:43,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3410, Invalid=3900, Unknown=0, NotChecked=0, Total=7310 [2020-07-20 05:39:43,173 INFO L87 Difference]: Start difference. First operand 263 states and 271 transitions. Second operand 86 states. [2020-07-20 05:39:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:39:46,824 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2020-07-20 05:39:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-20 05:39:46,825 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 566 [2020-07-20 05:39:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:39:46,828 INFO L225 Difference]: With dead ends: 272 [2020-07-20 05:39:46,828 INFO L226 Difference]: Without dead ends: 268 [2020-07-20 05:39:46,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=10295, Invalid=17427, Unknown=0, NotChecked=0, Total=27722 [2020-07-20 05:39:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-20 05:39:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-20 05:39:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-20 05:39:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-07-20 05:39:46,836 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 566 [2020-07-20 05:39:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:39:46,837 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-07-20 05:39:46,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-20 05:39:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-07-20 05:39:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-07-20 05:39:46,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:39:46,840 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:39:47,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:39:47,041 INFO L427 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:39:47,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:39:47,042 INFO L82 PathProgramCache]: Analyzing trace with hash -994642227, now seen corresponding path program 80 times [2020-07-20 05:39:47,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:39:47,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487795146] [2020-07-20 05:39:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:39:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:39:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-20 05:40:07,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487795146] [2020-07-20 05:40:07,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029061612] [2020-07-20 05:40:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1477d51d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:40:07,385 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1477d51d issued 2 check-sat command(s) [2020-07-20 05:40:07,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:40:07,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 164 conjunts are in the unsatisfiable core [2020-07-20 05:40:07,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:40:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-20 05:40:07,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:40:07,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2020-07-20 05:40:07,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823332348] [2020-07-20 05:40:07,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-20 05:40:07,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:40:07,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-20 05:40:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3493, Invalid=3989, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 05:40:07,818 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 87 states. [2020-07-20 05:40:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:40:11,584 INFO L93 Difference]: Finished difference Result 275 states and 285 transitions. [2020-07-20 05:40:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-20 05:40:11,586 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 573 [2020-07-20 05:40:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:40:11,588 INFO L225 Difference]: With dead ends: 275 [2020-07-20 05:40:11,588 INFO L226 Difference]: Without dead ends: 271 [2020-07-20 05:40:11,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6641 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=10545, Invalid=17847, Unknown=0, NotChecked=0, Total=28392 [2020-07-20 05:40:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-07-20 05:40:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2020-07-20 05:40:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-20 05:40:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2020-07-20 05:40:11,597 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 573 [2020-07-20 05:40:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:40:11,597 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2020-07-20 05:40:11,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-20 05:40:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2020-07-20 05:40:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-07-20 05:40:11,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:40:11,600 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:40:11,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:40:11,801 INFO L427 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:40:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:40:11,802 INFO L82 PathProgramCache]: Analyzing trace with hash -893372228, now seen corresponding path program 81 times [2020-07-20 05:40:11,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:40:11,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930406276] [2020-07-20 05:40:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:40:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-20 05:40:32,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930406276] [2020-07-20 05:40:32,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289116505] [2020-07-20 05:40:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2566a10c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:40:32,571 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2566a10c issued 2 check-sat command(s) [2020-07-20 05:40:32,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:40:32,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 166 conjunts are in the unsatisfiable core [2020-07-20 05:40:32,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:40:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-20 05:40:33,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:40:33,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 88 [2020-07-20 05:40:33,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648583215] [2020-07-20 05:40:33,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-07-20 05:40:33,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:40:33,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-07-20 05:40:33,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3577, Invalid=4079, Unknown=0, NotChecked=0, Total=7656 [2020-07-20 05:40:33,005 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 88 states. [2020-07-20 05:40:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:40:36,978 INFO L93 Difference]: Finished difference Result 278 states and 288 transitions. [2020-07-20 05:40:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-07-20 05:40:36,979 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 580 [2020-07-20 05:40:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:40:36,981 INFO L225 Difference]: With dead ends: 278 [2020-07-20 05:40:36,982 INFO L226 Difference]: Without dead ends: 274 [2020-07-20 05:40:36,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6805 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=10798, Invalid=18272, Unknown=0, NotChecked=0, Total=29070 [2020-07-20 05:40:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-20 05:40:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2020-07-20 05:40:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-20 05:40:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 280 transitions. [2020-07-20 05:40:36,993 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 280 transitions. Word has length 580 [2020-07-20 05:40:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:40:36,994 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 280 transitions. [2020-07-20 05:40:36,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-07-20 05:40:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 280 transitions. [2020-07-20 05:40:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-07-20 05:40:36,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:40:36,999 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:40:37,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:40:37,214 INFO L427 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:40:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:40:37,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2092663267, now seen corresponding path program 82 times [2020-07-20 05:40:37,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:40:37,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959114346] [2020-07-20 05:40:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:40:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:40:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-20 05:40:58,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959114346] [2020-07-20 05:40:58,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30324631] [2020-07-20 05:40:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3738fc26 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:40:58,702 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3738fc26 issued 2 check-sat command(s) [2020-07-20 05:40:58,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:40:58,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 168 conjunts are in the unsatisfiable core [2020-07-20 05:40:58,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:40:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-20 05:40:59,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:40:59,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2020-07-20 05:40:59,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305114490] [2020-07-20 05:40:59,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-20 05:40:59,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:40:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-20 05:40:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3662, Invalid=4170, Unknown=0, NotChecked=0, Total=7832 [2020-07-20 05:40:59,142 INFO L87 Difference]: Start difference. First operand 272 states and 280 transitions. Second operand 89 states. [2020-07-20 05:41:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:41:03,159 INFO L93 Difference]: Finished difference Result 281 states and 291 transitions. [2020-07-20 05:41:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-20 05:41:03,161 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 587 [2020-07-20 05:41:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:41:03,163 INFO L225 Difference]: With dead ends: 281 [2020-07-20 05:41:03,163 INFO L226 Difference]: Without dead ends: 277 [2020-07-20 05:41:03,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=11054, Invalid=18702, Unknown=0, NotChecked=0, Total=29756 [2020-07-20 05:41:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-20 05:41:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-20 05:41:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-20 05:41:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 283 transitions. [2020-07-20 05:41:03,173 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 283 transitions. Word has length 587 [2020-07-20 05:41:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:41:03,173 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 283 transitions. [2020-07-20 05:41:03,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-20 05:41:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 283 transitions. [2020-07-20 05:41:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-07-20 05:41:03,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:41:03,178 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:41:03,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:41:03,386 INFO L427 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:41:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:41:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1154425562, now seen corresponding path program 83 times [2020-07-20 05:41:03,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:41:03,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302139745] [2020-07-20 05:41:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:41:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-20 05:41:25,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302139745] [2020-07-20 05:41:25,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599018512] [2020-07-20 05:41:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@409550e7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:41:25,811 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@409550e7 issued 2 check-sat command(s) [2020-07-20 05:41:25,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:41:25,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 170 conjunts are in the unsatisfiable core [2020-07-20 05:41:25,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:41:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-20 05:41:26,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:41:26,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 90 [2020-07-20 05:41:26,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620079610] [2020-07-20 05:41:26,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-07-20 05:41:26,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:41:26,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-07-20 05:41:26,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3748, Invalid=4262, Unknown=0, NotChecked=0, Total=8010 [2020-07-20 05:41:26,263 INFO L87 Difference]: Start difference. First operand 275 states and 283 transitions. Second operand 90 states. [2020-07-20 05:41:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:41:30,523 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2020-07-20 05:41:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-07-20 05:41:30,524 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 594 [2020-07-20 05:41:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:41:30,527 INFO L225 Difference]: With dead ends: 284 [2020-07-20 05:41:30,527 INFO L226 Difference]: Without dead ends: 280 [2020-07-20 05:41:30,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=11313, Invalid=19137, Unknown=0, NotChecked=0, Total=30450 [2020-07-20 05:41:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-20 05:41:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2020-07-20 05:41:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 05:41:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 286 transitions. [2020-07-20 05:41:30,536 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 286 transitions. Word has length 594 [2020-07-20 05:41:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:41:30,536 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 286 transitions. [2020-07-20 05:41:30,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-07-20 05:41:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 286 transitions. [2020-07-20 05:41:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-07-20 05:41:30,540 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:41:30,541 INFO L422 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:41:30,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:41:30,742 INFO L427 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:41:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:41:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash 987354617, now seen corresponding path program 84 times [2020-07-20 05:41:30,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:41:30,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016899070] [2020-07-20 05:41:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:41:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-20 05:41:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016899070] [2020-07-20 05:41:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816423858] [2020-07-20 05:41:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@784133e9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:41:53,745 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@784133e9 issued 2 check-sat command(s) [2020-07-20 05:41:53,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:41:53,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 172 conjunts are in the unsatisfiable core [2020-07-20 05:41:53,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:41:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-20 05:41:54,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:41:54,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2020-07-20 05:41:54,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779091842] [2020-07-20 05:41:54,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-20 05:41:54,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:41:54,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-20 05:41:54,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3835, Invalid=4355, Unknown=0, NotChecked=0, Total=8190 [2020-07-20 05:41:54,207 INFO L87 Difference]: Start difference. First operand 278 states and 286 transitions. Second operand 91 states. [2020-07-20 05:41:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:41:58,540 INFO L93 Difference]: Finished difference Result 287 states and 297 transitions. [2020-07-20 05:41:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-20 05:41:58,542 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 601 [2020-07-20 05:41:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:41:58,545 INFO L225 Difference]: With dead ends: 287 [2020-07-20 05:41:58,545 INFO L226 Difference]: Without dead ends: 283 [2020-07-20 05:41:58,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=11575, Invalid=19577, Unknown=0, NotChecked=0, Total=31152 [2020-07-20 05:41:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-07-20 05:41:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2020-07-20 05:41:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-07-20 05:41:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 289 transitions. [2020-07-20 05:41:58,557 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 289 transitions. Word has length 601 [2020-07-20 05:41:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:41:58,558 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 289 transitions. [2020-07-20 05:41:58,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-20 05:41:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 289 transitions. [2020-07-20 05:41:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-07-20 05:41:58,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:41:58,561 INFO L422 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:41:58,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-07-20 05:41:58,762 INFO L427 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:41:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:41:58,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1293641872, now seen corresponding path program 85 times [2020-07-20 05:41:58,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:41:58,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151966599] [2020-07-20 05:41:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430e98d5 [2020-07-20 05:41:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:41:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:42:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-20 05:42:22,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151966599] [2020-07-20 05:42:22,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366936498] [2020-07-20 05:42:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e88d299 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:42:22,994 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e88d299 issued 2 check-sat command(s) [2020-07-20 05:42:22,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:42:23,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 174 conjunts are in the unsatisfiable core [2020-07-20 05:42:23,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:42:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-20 05:42:23,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:42:23,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 92 [2020-07-20 05:42:23,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648721511] [2020-07-20 05:42:23,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-07-20 05:42:23,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:42:23,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-07-20 05:42:23,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3923, Invalid=4449, Unknown=0, NotChecked=0, Total=8372 [2020-07-20 05:42:23,465 INFO L87 Difference]: Start difference. First operand 281 states and 289 transitions. Second operand 92 states.