/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:26:19,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:26:19,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:26:19,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:26:19,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:26:19,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:26:19,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:26:19,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:26:19,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:26:19,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:26:19,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:26:19,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:26:19,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:26:19,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:26:19,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:26:19,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:26:19,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:26:19,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:26:19,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:26:19,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:26:19,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:26:19,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:26:19,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:26:19,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:26:19,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 22:26:19,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 22:26:19,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 22:26:19,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 22:26:19,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 22:26:19,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 22:26:19,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:26:19,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:26:19,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:26:19,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:26:19,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:26:19,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:26:19,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:26:19,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:26:19,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:26:19,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:26:19,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:26:19,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:26:19,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:26:19,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:26:19,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:26:19,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:26:19,775 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:26:19,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:26:19,775 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:26:19,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:26:19,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:26:19,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:26:19,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:26:19,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:26:19,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:26:19,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:26:19,777 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:26:19,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:26:19,778 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:26:19,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:26:19,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:26:19,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:26:19,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:26:19,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:26:19,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:26:19,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:26:19,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:26:19,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:26:19,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:26:19,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:26:19,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:26:19,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:26:20,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:26:20,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:26:20,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:26:20,069 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:26:20,069 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:26:20,070 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max10-1.i [2019-11-23 22:26:20,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc9a2ede/e1374e840a6d4c46b4834a8addb60e5c/FLAG580182609 [2019-11-23 22:26:20,631 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:26:20,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max10-1.i [2019-11-23 22:26:20,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc9a2ede/e1374e840a6d4c46b4834a8addb60e5c/FLAG580182609 [2019-11-23 22:26:20,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc9a2ede/e1374e840a6d4c46b4834a8addb60e5c [2019-11-23 22:26:20,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:26:20,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:26:20,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:26:20,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:26:20,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:26:20,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:20" (1/1) ... [2019-11-23 22:26:20,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d69afc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:20, skipping insertion in model container [2019-11-23 22:26:20,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:20" (1/1) ... [2019-11-23 22:26:20,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:26:21,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:26:21,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:26:21,217 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:26:21,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:26:21,265 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:26:21,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21 WrapperNode [2019-11-23 22:26:21,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:26:21,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:26:21,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:26:21,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:26:21,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:26:21,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:26:21,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:26:21,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:26:21,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... [2019-11-23 22:26:21,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:26:21,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:26:21,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:26:21,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:26:21,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:26:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:26:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:26:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:26:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:26:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:26:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:26:21,859 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:26:21,860 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:26:21,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:21 BoogieIcfgContainer [2019-11-23 22:26:21,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:26:21,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:26:21,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:26:21,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:26:21,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:26:20" (1/3) ... [2019-11-23 22:26:21,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365ecbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:26:21, skipping insertion in model container [2019-11-23 22:26:21,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:21" (2/3) ... [2019-11-23 22:26:21,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365ecbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:26:21, skipping insertion in model container [2019-11-23 22:26:21,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:21" (3/3) ... [2019-11-23 22:26:21,870 INFO L109 eAbstractionObserver]: Analyzing ICFG max10-1.i [2019-11-23 22:26:21,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:26:21,887 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:26:21,899 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:26:21,923 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:26:21,923 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:26:21,923 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:26:21,923 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:26:21,923 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:26:21,924 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:26:21,924 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:26:21,924 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:26:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-23 22:26:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:26:21,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:21,945 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:21,945 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1332003061, now seen corresponding path program 1 times [2019-11-23 22:26:21,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:21,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492542427] [2019-11-23 22:26:21,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:26:22,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492542427] [2019-11-23 22:26:22,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:26:22,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:26:22,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358419517] [2019-11-23 22:26:22,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:26:22,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:22,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:26:22,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:26:22,110 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-11-23 22:26:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:22,136 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2019-11-23 22:26:22,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:26:22,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-23 22:26:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:22,151 INFO L225 Difference]: With dead ends: 62 [2019-11-23 22:26:22,151 INFO L226 Difference]: Without dead ends: 29 [2019-11-23 22:26:22,162 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:26:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-23 22:26:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-23 22:26:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-23 22:26:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-11-23 22:26:22,218 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2019-11-23 22:26:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:22,219 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-11-23 22:26:22,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:26:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-11-23 22:26:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:26:22,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:22,222 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:22,224 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:22,225 INFO L82 PathProgramCache]: Analyzing trace with hash 741944299, now seen corresponding path program 1 times [2019-11-23 22:26:22,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:22,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449899522] [2019-11-23 22:26:22,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:26:22,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449899522] [2019-11-23 22:26:22,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:26:22,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:26:22,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741164382] [2019-11-23 22:26:22,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:26:22,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:26:22,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:26:22,363 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 3 states. [2019-11-23 22:26:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:22,386 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2019-11-23 22:26:22,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:26:22,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-23 22:26:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:22,388 INFO L225 Difference]: With dead ends: 56 [2019-11-23 22:26:22,388 INFO L226 Difference]: Without dead ends: 31 [2019-11-23 22:26:22,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:26:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-23 22:26:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-23 22:26:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 22:26:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-23 22:26:22,397 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 17 [2019-11-23 22:26:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:22,397 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-23 22:26:22,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:26:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-23 22:26:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 22:26:22,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:22,398 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:22,399 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:22,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:22,399 INFO L82 PathProgramCache]: Analyzing trace with hash -826131671, now seen corresponding path program 1 times [2019-11-23 22:26:22,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:22,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952677562] [2019-11-23 22:26:22,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:26:22,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952677562] [2019-11-23 22:26:22,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:26:22,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:26:22,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868378464] [2019-11-23 22:26:22,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:26:22,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:22,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:26:22,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:26:22,453 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 3 states. [2019-11-23 22:26:22,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:22,529 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2019-11-23 22:26:22,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:26:22,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-23 22:26:22,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:22,531 INFO L225 Difference]: With dead ends: 62 [2019-11-23 22:26:22,531 INFO L226 Difference]: Without dead ends: 42 [2019-11-23 22:26:22,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:26:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-23 22:26:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2019-11-23 22:26:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-23 22:26:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-23 22:26:22,538 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2019-11-23 22:26:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:22,539 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-23 22:26:22,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:26:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-23 22:26:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-23 22:26:22,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:22,541 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:22,541 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1925905852, now seen corresponding path program 1 times [2019-11-23 22:26:22,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:22,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156556142] [2019-11-23 22:26:22,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:26:22,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156556142] [2019-11-23 22:26:22,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:26:22,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:26:22,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969991762] [2019-11-23 22:26:22,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:26:22,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:26:22,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:26:22,635 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 3 states. [2019-11-23 22:26:22,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:22,651 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-11-23 22:26:22,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:26:22,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-23 22:26:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:22,653 INFO L225 Difference]: With dead ends: 46 [2019-11-23 22:26:22,654 INFO L226 Difference]: Without dead ends: 35 [2019-11-23 22:26:22,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:26:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-23 22:26:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-23 22:26:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-23 22:26:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-11-23 22:26:22,660 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 31 [2019-11-23 22:26:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:22,661 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-11-23 22:26:22,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:26:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-11-23 22:26:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 22:26:22,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:22,662 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:22,663 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:22,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1542894914, now seen corresponding path program 1 times [2019-11-23 22:26:22,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:22,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070109628] [2019-11-23 22:26:22,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:26:22,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070109628] [2019-11-23 22:26:22,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177983479] [2019-11-23 22:26:22,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:22,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:26:22,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:26:22,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:22,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:26:22,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231675054] [2019-11-23 22:26:22,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:26:22,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:22,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:26:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:26:22,866 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2019-11-23 22:26:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:22,903 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2019-11-23 22:26:22,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:26:22,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-11-23 22:26:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:22,906 INFO L225 Difference]: With dead ends: 66 [2019-11-23 22:26:22,907 INFO L226 Difference]: Without dead ends: 37 [2019-11-23 22:26:22,907 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:26:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-23 22:26:22,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-23 22:26:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-23 22:26:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-23 22:26:22,918 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2019-11-23 22:26:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:22,919 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-23 22:26:22,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:26:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-23 22:26:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-23 22:26:22,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:22,923 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:23,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:23,125 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1235585152, now seen corresponding path program 2 times [2019-11-23 22:26:23,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:23,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615131761] [2019-11-23 22:26:23,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:26:23,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615131761] [2019-11-23 22:26:23,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538432886] [2019-11-23 22:26:23,230 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:23,311 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:26:23,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:23,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:26:23,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:26:23,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:23,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-23 22:26:23,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837756467] [2019-11-23 22:26:23,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:26:23,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:23,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:26:23,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:26:23,342 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2019-11-23 22:26:23,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:23,386 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-11-23 22:26:23,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:26:23,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-11-23 22:26:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:23,389 INFO L225 Difference]: With dead ends: 68 [2019-11-23 22:26:23,389 INFO L226 Difference]: Without dead ends: 39 [2019-11-23 22:26:23,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:26:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-23 22:26:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-11-23 22:26:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-23 22:26:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-11-23 22:26:23,401 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 35 [2019-11-23 22:26:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:23,401 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-11-23 22:26:23,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:26:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-11-23 22:26:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-23 22:26:23,402 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:23,404 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:23,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:23,610 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2031320002, now seen corresponding path program 3 times [2019-11-23 22:26:23,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:23,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535616914] [2019-11-23 22:26:23,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:26:23,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535616914] [2019-11-23 22:26:23,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46427259] [2019-11-23 22:26:23,730 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:23,797 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:26:23,797 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:23,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:26:23,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-23 22:26:23,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:23,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-11-23 22:26:23,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754101171] [2019-11-23 22:26:23,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:26:23,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:23,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:26:23,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:26:23,831 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 8 states. [2019-11-23 22:26:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:23,961 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2019-11-23 22:26:23,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:26:23,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-23 22:26:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:23,962 INFO L225 Difference]: With dead ends: 91 [2019-11-23 22:26:23,962 INFO L226 Difference]: Without dead ends: 62 [2019-11-23 22:26:23,963 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:26:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-23 22:26:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2019-11-23 22:26:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-23 22:26:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2019-11-23 22:26:23,977 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 37 [2019-11-23 22:26:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:23,977 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2019-11-23 22:26:23,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:26:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2019-11-23 22:26:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-23 22:26:23,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:23,982 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:24,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:24,187 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:24,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:24,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1702871319, now seen corresponding path program 4 times [2019-11-23 22:26:24,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:24,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394426573] [2019-11-23 22:26:24,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-23 22:26:24,280 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394426573] [2019-11-23 22:26:24,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348533640] [2019-11-23 22:26:24,281 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:24,335 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:26:24,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:24,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:26:24,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-23 22:26:24,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:24,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-11-23 22:26:24,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073526223] [2019-11-23 22:26:24,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:26:24,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:24,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:26:24,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:26:24,377 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 10 states. [2019-11-23 22:26:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:24,528 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2019-11-23 22:26:24,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:26:24,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-11-23 22:26:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:24,530 INFO L225 Difference]: With dead ends: 117 [2019-11-23 22:26:24,530 INFO L226 Difference]: Without dead ends: 76 [2019-11-23 22:26:24,531 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:26:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-23 22:26:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2019-11-23 22:26:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-23 22:26:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2019-11-23 22:26:24,540 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 51 [2019-11-23 22:26:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:24,540 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2019-11-23 22:26:24,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:26:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2019-11-23 22:26:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-23 22:26:24,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:24,544 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:24,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:24,749 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:24,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:24,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1821754384, now seen corresponding path program 5 times [2019-11-23 22:26:24,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:24,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950418590] [2019-11-23 22:26:24,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-23 22:26:24,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950418590] [2019-11-23 22:26:24,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070630328] [2019-11-23 22:26:24,906 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:24,991 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-23 22:26:24,992 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:24,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:26:24,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-23 22:26:25,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:25,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-11-23 22:26:25,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003568812] [2019-11-23 22:26:25,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:26:25,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:25,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:26:25,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:26:25,049 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 12 states. [2019-11-23 22:26:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:25,193 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2019-11-23 22:26:25,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 22:26:25,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2019-11-23 22:26:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:25,194 INFO L225 Difference]: With dead ends: 143 [2019-11-23 22:26:25,195 INFO L226 Difference]: Without dead ends: 90 [2019-11-23 22:26:25,195 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:26:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-23 22:26:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2019-11-23 22:26:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-23 22:26:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2019-11-23 22:26:25,203 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 65 [2019-11-23 22:26:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:25,203 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2019-11-23 22:26:25,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:26:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2019-11-23 22:26:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-23 22:26:25,204 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:25,205 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:25,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:25,409 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash 816567497, now seen corresponding path program 6 times [2019-11-23 22:26:25,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:25,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749208751] [2019-11-23 22:26:25,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-11-23 22:26:25,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749208751] [2019-11-23 22:26:25,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034058563] [2019-11-23 22:26:25,567 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:25,630 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-11-23 22:26:25,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:25,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:26:25,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-23 22:26:25,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:25,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 11 [2019-11-23 22:26:25,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461919338] [2019-11-23 22:26:25,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:26:25,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:25,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:26:25,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:26:25,676 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand 11 states. [2019-11-23 22:26:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:25,739 INFO L93 Difference]: Finished difference Result 151 states and 184 transitions. [2019-11-23 22:26:25,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:26:25,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2019-11-23 22:26:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:25,743 INFO L225 Difference]: With dead ends: 151 [2019-11-23 22:26:25,743 INFO L226 Difference]: Without dead ends: 86 [2019-11-23 22:26:25,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:26:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-23 22:26:25,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2019-11-23 22:26:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-23 22:26:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2019-11-23 22:26:25,756 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 79 [2019-11-23 22:26:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:25,757 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2019-11-23 22:26:25,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:26:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2019-11-23 22:26:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-23 22:26:25,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:25,758 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:25,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:25,959 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:25,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1881113861, now seen corresponding path program 7 times [2019-11-23 22:26:25,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:25,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409508725] [2019-11-23 22:26:25,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-23 22:26:26,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409508725] [2019-11-23 22:26:26,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384452249] [2019-11-23 22:26:26,077 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:26,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:26:26,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-23 22:26:26,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:26,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-23 22:26:26,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955617635] [2019-11-23 22:26:26,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:26:26,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:26:26,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:26:26,189 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 11 states. [2019-11-23 22:26:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:26,232 INFO L93 Difference]: Finished difference Result 154 states and 186 transitions. [2019-11-23 22:26:26,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:26:26,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2019-11-23 22:26:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:26,234 INFO L225 Difference]: With dead ends: 154 [2019-11-23 22:26:26,234 INFO L226 Difference]: Without dead ends: 87 [2019-11-23 22:26:26,235 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:26:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-23 22:26:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2019-11-23 22:26:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-23 22:26:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2019-11-23 22:26:26,242 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 83 [2019-11-23 22:26:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:26,242 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2019-11-23 22:26:26,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:26:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2019-11-23 22:26:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-23 22:26:26,243 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:26,243 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:26,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:26,449 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:26,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1535429827, now seen corresponding path program 8 times [2019-11-23 22:26:26,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:26,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366212033] [2019-11-23 22:26:26,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-23 22:26:26,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366212033] [2019-11-23 22:26:26,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005574511] [2019-11-23 22:26:26,569 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:26,653 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:26:26,653 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:26,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:26:26,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-23 22:26:26,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:26,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-23 22:26:26,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512664311] [2019-11-23 22:26:26,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:26:26,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:26,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:26:26,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:26:26,683 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 12 states. [2019-11-23 22:26:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:26,722 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2019-11-23 22:26:26,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:26:26,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2019-11-23 22:26:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:26,727 INFO L225 Difference]: With dead ends: 156 [2019-11-23 22:26:26,728 INFO L226 Difference]: Without dead ends: 89 [2019-11-23 22:26:26,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:26:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-23 22:26:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2019-11-23 22:26:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-23 22:26:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2019-11-23 22:26:26,744 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 85 [2019-11-23 22:26:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:26,744 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2019-11-23 22:26:26,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:26:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2019-11-23 22:26:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-23 22:26:26,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:26,745 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:26,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:26,946 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:26,947 INFO L82 PathProgramCache]: Analyzing trace with hash 45554945, now seen corresponding path program 9 times [2019-11-23 22:26:26,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:26,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808590793] [2019-11-23 22:26:26,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-23 22:26:27,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808590793] [2019-11-23 22:26:27,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627488606] [2019-11-23 22:26:27,092 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:27,150 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:26:27,150 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:27,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:26:27,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-11-23 22:26:27,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:27,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-11-23 22:26:27,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972902589] [2019-11-23 22:26:27,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-23 22:26:27,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:27,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-23 22:26:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2019-11-23 22:26:27,199 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand 15 states. [2019-11-23 22:26:27,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:27,277 INFO L93 Difference]: Finished difference Result 160 states and 193 transitions. [2019-11-23 22:26:27,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-23 22:26:27,278 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 87 [2019-11-23 22:26:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:27,279 INFO L225 Difference]: With dead ends: 160 [2019-11-23 22:26:27,279 INFO L226 Difference]: Without dead ends: 93 [2019-11-23 22:26:27,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2019-11-23 22:26:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-23 22:26:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-11-23 22:26:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-23 22:26:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2019-11-23 22:26:27,284 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 87 [2019-11-23 22:26:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:27,285 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2019-11-23 22:26:27,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-23 22:26:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2019-11-23 22:26:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-23 22:26:27,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:27,286 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:27,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:27,489 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:27,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash 779977021, now seen corresponding path program 10 times [2019-11-23 22:26:27,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:27,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053224937] [2019-11-23 22:26:27,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-11-23 22:26:27,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053224937] [2019-11-23 22:26:27,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976008690] [2019-11-23 22:26:27,575 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2019-11-23 22:26:27,638 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:26:27,638 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:27,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:26:27,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-11-23 22:26:27,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:27,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-23 22:26:27,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413130157] [2019-11-23 22:26:27,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:26:27,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:27,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:26:27,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:26:27,661 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 8 states. [2019-11-23 22:26:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:27,750 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2019-11-23 22:26:27,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:26:27,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2019-11-23 22:26:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:27,752 INFO L225 Difference]: With dead ends: 164 [2019-11-23 22:26:27,752 INFO L226 Difference]: Without dead ends: 113 [2019-11-23 22:26:27,753 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:26:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-23 22:26:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2019-11-23 22:26:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-23 22:26:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2019-11-23 22:26:27,759 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 91 [2019-11-23 22:26:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:27,760 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2019-11-23 22:26:27,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:26:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2019-11-23 22:26:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-23 22:26:27,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:27,761 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:27,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:27,970 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:27,971 INFO L82 PathProgramCache]: Analyzing trace with hash -157348776, now seen corresponding path program 11 times [2019-11-23 22:26:27,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:27,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397541454] [2019-11-23 22:26:27,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-11-23 22:26:28,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397541454] [2019-11-23 22:26:28,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519092671] [2019-11-23 22:26:28,087 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2019-11-23 22:26:28,320 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-23 22:26:28,321 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:28,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 22:26:28,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-11-23 22:26:28,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:28,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-23 22:26:28,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448826841] [2019-11-23 22:26:28,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:26:28,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:28,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:26:28,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:26:28,355 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 9 states. [2019-11-23 22:26:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:28,461 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2019-11-23 22:26:28,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:26:28,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2019-11-23 22:26:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:28,462 INFO L225 Difference]: With dead ends: 184 [2019-11-23 22:26:28,462 INFO L226 Difference]: Without dead ends: 125 [2019-11-23 22:26:28,464 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:26:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-23 22:26:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2019-11-23 22:26:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-23 22:26:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2019-11-23 22:26:28,471 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 103 [2019-11-23 22:26:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:28,472 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2019-11-23 22:26:28,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:26:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2019-11-23 22:26:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-23 22:26:28,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:28,475 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:28,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:28,679 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -310671629, now seen corresponding path program 12 times [2019-11-23 22:26:28,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:28,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044040192] [2019-11-23 22:26:28,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2019-11-23 22:26:28,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044040192] [2019-11-23 22:26:28,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951966285] [2019-11-23 22:26:28,754 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2019-11-23 22:26:29,010 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-23 22:26:29,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:29,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:26:29,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2019-11-23 22:26:29,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:29,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-23 22:26:29,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161911121] [2019-11-23 22:26:29,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:26:29,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:26:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:26:29,049 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 7 states. [2019-11-23 22:26:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:29,078 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2019-11-23 22:26:29,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:26:29,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-11-23 22:26:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:29,083 INFO L225 Difference]: With dead ends: 150 [2019-11-23 22:26:29,083 INFO L226 Difference]: Without dead ends: 119 [2019-11-23 22:26:29,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:26:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-23 22:26:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2019-11-23 22:26:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-23 22:26:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2019-11-23 22:26:29,093 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 115 [2019-11-23 22:26:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:29,094 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2019-11-23 22:26:29,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:26:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2019-11-23 22:26:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-23 22:26:29,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:29,096 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:29,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:29,300 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1481892623, now seen corresponding path program 13 times [2019-11-23 22:26:29,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:29,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345858451] [2019-11-23 22:26:29,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2019-11-23 22:26:29,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345858451] [2019-11-23 22:26:29,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326231331] [2019-11-23 22:26:29,427 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2019-11-23 22:26:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:29,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 22:26:29,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2019-11-23 22:26:29,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:29,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-23 22:26:29,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199571189] [2019-11-23 22:26:29,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:26:29,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:26:29,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:26:29,571 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand 10 states. [2019-11-23 22:26:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:29,684 INFO L93 Difference]: Finished difference Result 208 states and 253 transitions. [2019-11-23 22:26:29,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:26:29,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 117 [2019-11-23 22:26:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:29,686 INFO L225 Difference]: With dead ends: 208 [2019-11-23 22:26:29,686 INFO L226 Difference]: Without dead ends: 139 [2019-11-23 22:26:29,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:26:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-11-23 22:26:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 130. [2019-11-23 22:26:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-23 22:26:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2019-11-23 22:26:29,692 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 117 [2019-11-23 22:26:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:29,692 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2019-11-23 22:26:29,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:26:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2019-11-23 22:26:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-23 22:26:29,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:29,695 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:29,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:29,899 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:29,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1976184820, now seen corresponding path program 14 times [2019-11-23 22:26:29,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:29,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181592244] [2019-11-23 22:26:29,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2019-11-23 22:26:30,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181592244] [2019-11-23 22:26:30,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118599928] [2019-11-23 22:26:30,027 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-23 22:26:30,127 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:26:30,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:30,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:26:30,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2019-11-23 22:26:30,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:30,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-23 22:26:30,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208058814] [2019-11-23 22:26:30,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:26:30,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:30,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:26:30,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:26:30,157 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand 11 states. [2019-11-23 22:26:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:30,284 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2019-11-23 22:26:30,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:26:30,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 129 [2019-11-23 22:26:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:30,286 INFO L225 Difference]: With dead ends: 228 [2019-11-23 22:26:30,286 INFO L226 Difference]: Without dead ends: 151 [2019-11-23 22:26:30,287 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:26:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-23 22:26:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 142. [2019-11-23 22:26:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-23 22:26:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 170 transitions. [2019-11-23 22:26:30,291 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 170 transitions. Word has length 129 [2019-11-23 22:26:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:30,291 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 170 transitions. [2019-11-23 22:26:30,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:26:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 170 transitions. [2019-11-23 22:26:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-23 22:26:30,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:30,293 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:30,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:30,497 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:30,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:30,498 INFO L82 PathProgramCache]: Analyzing trace with hash -897305945, now seen corresponding path program 15 times [2019-11-23 22:26:30,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:30,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43880870] [2019-11-23 22:26:30,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2019-11-23 22:26:30,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43880870] [2019-11-23 22:26:30,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453160888] [2019-11-23 22:26:30,830 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-11-23 22:26:30,989 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-23 22:26:30,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:30,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:26:30,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2019-11-23 22:26:31,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:31,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-11-23 22:26:31,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037234722] [2019-11-23 22:26:31,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-23 22:26:31,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:31,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-23 22:26:31,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-23 22:26:31,077 INFO L87 Difference]: Start difference. First operand 142 states and 170 transitions. Second operand 16 states. [2019-11-23 22:26:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:31,247 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2019-11-23 22:26:31,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-23 22:26:31,248 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 141 [2019-11-23 22:26:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:31,249 INFO L225 Difference]: With dead ends: 251 [2019-11-23 22:26:31,249 INFO L226 Difference]: Without dead ends: 166 [2019-11-23 22:26:31,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-23 22:26:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-23 22:26:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2019-11-23 22:26:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-23 22:26:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2019-11-23 22:26:31,254 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 141 [2019-11-23 22:26:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:31,254 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2019-11-23 22:26:31,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-23 22:26:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2019-11-23 22:26:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-23 22:26:31,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:31,256 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:31,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:31,457 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1796886976, now seen corresponding path program 16 times [2019-11-23 22:26:31,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:31,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817384184] [2019-11-23 22:26:31,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2019-11-23 22:26:31,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817384184] [2019-11-23 22:26:31,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567444481] [2019-11-23 22:26:31,570 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2019-11-23 22:26:31,694 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:26:31,694 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:31,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 22:26:31,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2019-11-23 22:26:31,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:31,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 18 [2019-11-23 22:26:31,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543678691] [2019-11-23 22:26:31,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 22:26:31,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:31,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 22:26:31,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:26:31,846 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand 18 states. [2019-11-23 22:26:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:32,055 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2019-11-23 22:26:32,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-23 22:26:32,055 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 155 [2019-11-23 22:26:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:32,056 INFO L225 Difference]: With dead ends: 266 [2019-11-23 22:26:32,057 INFO L226 Difference]: Without dead ends: 171 [2019-11-23 22:26:32,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:26:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-23 22:26:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2019-11-23 22:26:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2019-11-23 22:26:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 204 transitions. [2019-11-23 22:26:32,063 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 204 transitions. Word has length 155 [2019-11-23 22:26:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:32,064 INFO L462 AbstractCegarLoop]: Abstraction has 170 states and 204 transitions. [2019-11-23 22:26:32,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 22:26:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 204 transitions. [2019-11-23 22:26:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-23 22:26:32,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:32,066 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:32,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:32,271 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1951319001, now seen corresponding path program 17 times [2019-11-23 22:26:32,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:32,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424949782] [2019-11-23 22:26:32,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-11-23 22:26:32,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424949782] [2019-11-23 22:26:32,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926610723] [2019-11-23 22:26:32,405 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2019-11-23 22:26:33,477 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-23 22:26:33,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:33,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 22:26:33,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-11-23 22:26:33,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:26:33,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-23 22:26:33,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999237813] [2019-11-23 22:26:33,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:26:33,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:26:33,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:26:33,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:26:33,536 INFO L87 Difference]: Start difference. First operand 170 states and 204 transitions. Second operand 10 states. [2019-11-23 22:26:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:26:33,567 INFO L93 Difference]: Finished difference Result 220 states and 265 transitions. [2019-11-23 22:26:33,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:26:33,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 169 [2019-11-23 22:26:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:26:33,568 INFO L225 Difference]: With dead ends: 220 [2019-11-23 22:26:33,568 INFO L226 Difference]: Without dead ends: 173 [2019-11-23 22:26:33,569 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:26:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-23 22:26:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2019-11-23 22:26:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-23 22:26:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2019-11-23 22:26:33,574 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 169 [2019-11-23 22:26:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:26:33,574 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2019-11-23 22:26:33,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:26:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2019-11-23 22:26:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-23 22:26:33,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:26:33,576 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:26:33,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:26:33,777 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:26:33,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:26:33,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2098788521, now seen corresponding path program 18 times [2019-11-23 22:26:33,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:26:33,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66368493] [2019-11-23 22:26:33,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:26:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:26:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-11-23 22:26:33,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66368493] [2019-11-23 22:26:33,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973434359] [2019-11-23 22:26:33,938 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2019-11-23 22:26:34,645 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2019-11-23 22:26:34,645 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:26:34,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 75 conjunts are in the unsatisfiable core [2019-11-23 22:26:34,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:26:34,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:34,983 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2019-11-23 22:26:34,983 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:26:34,991 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:26:34,991 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:26:34,991 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-23 22:26:35,030 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:35,110 INFO L343 Elim1Store]: treesize reduction 69, result has 56.9 percent of original size [2019-11-23 22:26:35,110 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 105 [2019-11-23 22:26:35,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:35,114 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:26:35,154 INFO L567 ElimStorePlain]: treesize reduction 65, result has 43.0 percent of original size [2019-11-23 22:26:35,154 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:26:35,154 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:49 [2019-11-23 22:26:35,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,309 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 36 [2019-11-23 22:26:39,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,329 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:39,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:39,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:39,558 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-11-23 22:26:39,559 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:26:39,559 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 68 treesize of output 337 [2019-11-23 22:26:39,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,650 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:26:39,675 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:39,682 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:26:39,720 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:26:39,721 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 141 [2019-11-23 22:26:39,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:39,724 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:26:40,464 WARN L192 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 51 [2019-11-23 22:26:40,465 INFO L567 ElimStorePlain]: treesize reduction 3591, result has 4.7 percent of original size [2019-11-23 22:26:40,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:40,466 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-11-23 22:26:40,467 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:115, output treesize:178 [2019-11-23 22:26:40,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:40,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:40,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:40,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:26:40,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:27:52,198 WARN L192 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-11-23 22:27:52,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms