/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/sep10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:28:07,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:28:07,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:28:07,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:28:07,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:28:07,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:28:07,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:28:07,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:28:07,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:28:07,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:28:07,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:28:07,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:28:07,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:28:07,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:28:07,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:28:07,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:28:07,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:28:07,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:28:07,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:28:07,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:28:07,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:28:07,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:28:07,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:28:07,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:28:07,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:28:07,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:28:07,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:28:07,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:28:07,817 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 22:28:07,832 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:28:07,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:28:07,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:28:07,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:28:07,834 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:28:07,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:28:07,834 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:28:07,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:28:07,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:28:07,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:28:07,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:28:07,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:28:07,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:28:07,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:28:07,836 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:28:07,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:28:07,836 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:28:07,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:28:07,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:28:07,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:28:07,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:28:07,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:28:07,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:28:07,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:28:07,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:28:07,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:28:07,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:28:07,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:28:07,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:28:07,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:28:08,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:28:08,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:28:08,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:28:08,141 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:28:08,141 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:28:08,142 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep10-2.i [2019-11-23 22:28:08,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9a0063/55b418fccd104427af21de974a480ca9/FLAGdb3f264c3 [2019-11-23 22:28:08,713 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:28:08,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep10-2.i [2019-11-23 22:28:08,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9a0063/55b418fccd104427af21de974a480ca9/FLAGdb3f264c3 [2019-11-23 22:28:09,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd9a0063/55b418fccd104427af21de974a480ca9 [2019-11-23 22:28:09,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:28:09,166 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:28:09,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:28:09,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:28:09,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:28:09,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59262855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09, skipping insertion in model container [2019-11-23 22:28:09,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:28:09,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:28:09,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:28:09,424 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:28:09,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:28:09,471 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:28:09,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09 WrapperNode [2019-11-23 22:28:09,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:28:09,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:28:09,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:28:09,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:28:09,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:28:09,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:28:09,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:28:09,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:28:09,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... [2019-11-23 22:28:09,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:28:09,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:28:09,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:28:09,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:28:09,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:28:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:28:09,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:28:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:28:09,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:28:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:28:09,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:28:10,072 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:28:10,072 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:28:10,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:10 BoogieIcfgContainer [2019-11-23 22:28:10,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:28:10,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:28:10,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:28:10,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:28:10,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:28:09" (1/3) ... [2019-11-23 22:28:10,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abbb860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:10, skipping insertion in model container [2019-11-23 22:28:10,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:09" (2/3) ... [2019-11-23 22:28:10,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abbb860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:10, skipping insertion in model container [2019-11-23 22:28:10,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:10" (3/3) ... [2019-11-23 22:28:10,082 INFO L109 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2019-11-23 22:28:10,089 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:28:10,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:28:10,108 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:28:10,128 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:28:10,128 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:28:10,128 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:28:10,128 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:28:10,129 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:28:10,129 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:28:10,129 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:28:10,129 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:28:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-23 22:28:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:28:10,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:10,152 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 22:28:10,152 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:10,159 INFO L82 PathProgramCache]: Analyzing trace with hash -23080620, now seen corresponding path program 1 times [2019-11-23 22:28:10,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:10,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864146619] [2019-11-23 22:28:10,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:10,289 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 22:28:10,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864146619] [2019-11-23 22:28:10,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:28:10,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:28:10,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515098762] [2019-11-23 22:28:10,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:28:10,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:10,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:28:10,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:28:10,313 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-23 22:28:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:10,330 INFO L93 Difference]: Finished difference Result 56 states and 80 transitions. [2019-11-23 22:28:10,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:28:10,331 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-23 22:28:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:10,339 INFO L225 Difference]: With dead ends: 56 [2019-11-23 22:28:10,340 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 22:28:10,343 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 22:28:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 22:28:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-23 22:28:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:28:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-23 22:28:10,381 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 17 [2019-11-23 22:28:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:10,381 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-23 22:28:10,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:28:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-23 22:28:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:28:10,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:10,383 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 22:28:10,383 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1060874985, now seen corresponding path program 1 times [2019-11-23 22:28:10,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:10,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932312248] [2019-11-23 22:28:10,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:10,443 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 22:28:10,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932312248] [2019-11-23 22:28:10,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:28:10,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:28:10,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257313852] [2019-11-23 22:28:10,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:28:10,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:10,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:28:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:28:10,452 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 3 states. [2019-11-23 22:28:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:10,488 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2019-11-23 22:28:10,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:28:10,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-23 22:28:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:10,490 INFO L225 Difference]: With dead ends: 50 [2019-11-23 22:28:10,490 INFO L226 Difference]: Without dead ends: 28 [2019-11-23 22:28:10,491 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 22:28:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-23 22:28:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-23 22:28:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-23 22:28:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2019-11-23 22:28:10,498 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 17 [2019-11-23 22:28:10,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:10,499 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-23 22:28:10,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:28:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2019-11-23 22:28:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 22:28:10,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:10,500 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 22:28:10,500 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash -507200985, now seen corresponding path program 1 times [2019-11-23 22:28:10,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:10,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722884756] [2019-11-23 22:28:10,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:10,581 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 22:28:10,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722884756] [2019-11-23 22:28:10,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:28:10,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:28:10,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111319753] [2019-11-23 22:28:10,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:28:10,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:10,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:28:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:28:10,583 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 3 states. [2019-11-23 22:28:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:10,652 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2019-11-23 22:28:10,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:28:10,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-23 22:28:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:10,654 INFO L225 Difference]: With dead ends: 54 [2019-11-23 22:28:10,654 INFO L226 Difference]: Without dead ends: 36 [2019-11-23 22:28:10,655 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 22:28:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-23 22:28:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-11-23 22:28:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 22:28:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-23 22:28:10,662 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19 [2019-11-23 22:28:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:10,662 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-23 22:28:10,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:28:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-23 22:28:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 22:28:10,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:10,664 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] [2019-11-23 22:28:10,664 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1833868074, now seen corresponding path program 1 times [2019-11-23 22:28:10,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:10,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681453144] [2019-11-23 22:28:10,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:10,779 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 22:28:10,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681453144] [2019-11-23 22:28:10,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:28:10,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:28:10,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635848808] [2019-11-23 22:28:10,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:28:10,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:10,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:28:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:28:10,782 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 3 states. [2019-11-23 22:28:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:10,801 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-11-23 22:28:10,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:28:10,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-23 22:28:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:10,802 INFO L225 Difference]: With dead ends: 42 [2019-11-23 22:28:10,803 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 22:28:10,803 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 22:28:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 22:28:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-23 22:28:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-23 22:28:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-23 22:28:10,809 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 28 [2019-11-23 22:28:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:10,809 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-23 22:28:10,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:28:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-11-23 22:28:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-23 22:28:10,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:10,810 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] [2019-11-23 22:28:10,811 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:10,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1777663060, now seen corresponding path program 1 times [2019-11-23 22:28:10,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:10,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352482943] [2019-11-23 22:28:10,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:10,900 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 22:28:10,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352482943] [2019-11-23 22:28:10,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62578179] [2019-11-23 22:28:10,901 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 22:28:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:10,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:28:10,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:11,033 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 22:28:11,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:11,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:28:11,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953763023] [2019-11-23 22:28:11,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:28:11,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:11,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:28:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:28:11,040 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 5 states. [2019-11-23 22:28:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:11,071 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-11-23 22:28:11,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:28:11,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-23 22:28:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:11,073 INFO L225 Difference]: With dead ends: 60 [2019-11-23 22:28:11,073 INFO L226 Difference]: Without dead ends: 34 [2019-11-23 22:28:11,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 22:28:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-23 22:28:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-11-23 22:28:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-23 22:28:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-23 22:28:11,080 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 30 [2019-11-23 22:28:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:11,080 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-23 22:28:11,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:28:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-23 22:28:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-23 22:28:11,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:11,082 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] [2019-11-23 22:28:11,291 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:11,291 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:11,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:11,292 INFO L82 PathProgramCache]: Analyzing trace with hash -861329106, now seen corresponding path program 2 times [2019-11-23 22:28:11,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:11,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901289102] [2019-11-23 22:28:11,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:11,422 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 22:28:11,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901289102] [2019-11-23 22:28:11,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684503794] [2019-11-23 22:28:11,423 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 22:28:11,495 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:28:11,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:11,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:28:11,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:11,526 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 22:28:11,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:11,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-23 22:28:11,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799999254] [2019-11-23 22:28:11,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:28:11,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:11,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:28:11,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:28:11,529 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2019-11-23 22:28:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:11,571 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2019-11-23 22:28:11,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:28:11,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-23 22:28:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:11,572 INFO L225 Difference]: With dead ends: 62 [2019-11-23 22:28:11,572 INFO L226 Difference]: Without dead ends: 36 [2019-11-23 22:28:11,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 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 22:28:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-23 22:28:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-23 22:28:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-23 22:28:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-11-23 22:28:11,577 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 32 [2019-11-23 22:28:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:11,578 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-11-23 22:28:11,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:28:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-11-23 22:28:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-23 22:28:11,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:11,579 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] [2019-11-23 22:28:11,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:11,783 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash -732694992, now seen corresponding path program 3 times [2019-11-23 22:28:11,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:11,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720228980] [2019-11-23 22:28:11,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:11,908 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 22:28:11,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720228980] [2019-11-23 22:28:11,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590377757] [2019-11-23 22:28:11,909 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 22:28:11,993 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:28:11,994 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:11,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:28:11,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:12,032 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 22:28:12,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:12,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-11-23 22:28:12,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626446143] [2019-11-23 22:28:12,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:28:12,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:12,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:28:12,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:28:12,035 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 8 states. [2019-11-23 22:28:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:12,152 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2019-11-23 22:28:12,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:28:12,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-23 22:28:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:12,156 INFO L225 Difference]: With dead ends: 79 [2019-11-23 22:28:12,156 INFO L226 Difference]: Without dead ends: 53 [2019-11-23 22:28:12,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 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 22:28:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-23 22:28:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2019-11-23 22:28:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-23 22:28:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2019-11-23 22:28:12,168 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 34 [2019-11-23 22:28:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:12,168 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-11-23 22:28:12,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:28:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-11-23 22:28:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-23 22:28:12,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:12,171 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 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 22:28:12,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:12,375 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:12,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1535236799, now seen corresponding path program 4 times [2019-11-23 22:28:12,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:12,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192107033] [2019-11-23 22:28:12,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-23 22:28:12,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192107033] [2019-11-23 22:28:12,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994348777] [2019-11-23 22:28:12,501 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 22:28:12,555 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:28:12,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:12,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:28:12,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-23 22:28:12,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:12,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-11-23 22:28:12,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727433864] [2019-11-23 22:28:12,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:28:12,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:12,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:28:12,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:28:12,598 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 10 states. [2019-11-23 22:28:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:12,695 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2019-11-23 22:28:12,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:28:12,696 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2019-11-23 22:28:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:12,697 INFO L225 Difference]: With dead ends: 99 [2019-11-23 22:28:12,697 INFO L226 Difference]: Without dead ends: 64 [2019-11-23 22:28:12,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 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 22:28:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-23 22:28:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2019-11-23 22:28:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-23 22:28:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2019-11-23 22:28:12,705 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 45 [2019-11-23 22:28:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:12,706 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2019-11-23 22:28:12,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:28:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2019-11-23 22:28:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-23 22:28:12,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:12,707 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 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 22:28:12,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:12,916 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:12,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:12,917 INFO L82 PathProgramCache]: Analyzing trace with hash -326050476, now seen corresponding path program 5 times [2019-11-23 22:28:12,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:12,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767615519] [2019-11-23 22:28:12,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-23 22:28:13,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767615519] [2019-11-23 22:28:13,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910357069] [2019-11-23 22:28:13,066 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 22:28:13,165 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-23 22:28:13,165 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:13,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:28:13,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-23 22:28:13,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:13,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-11-23 22:28:13,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391721883] [2019-11-23 22:28:13,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:28:13,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:13,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:28:13,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:28:13,255 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 12 states. [2019-11-23 22:28:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:13,400 INFO L93 Difference]: Finished difference Result 119 states and 154 transitions. [2019-11-23 22:28:13,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 22:28:13,400 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2019-11-23 22:28:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:13,401 INFO L225 Difference]: With dead ends: 119 [2019-11-23 22:28:13,401 INFO L226 Difference]: Without dead ends: 75 [2019-11-23 22:28:13,402 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 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 22:28:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-23 22:28:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2019-11-23 22:28:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-23 22:28:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2019-11-23 22:28:13,409 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 56 [2019-11-23 22:28:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:13,409 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2019-11-23 22:28:13,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:28:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2019-11-23 22:28:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-23 22:28:13,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:13,411 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 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 22:28:13,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:13,612 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash 54449435, now seen corresponding path program 6 times [2019-11-23 22:28:13,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:13,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843141097] [2019-11-23 22:28:13,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-23 22:28:13,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843141097] [2019-11-23 22:28:13,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267994671] [2019-11-23 22:28:13,722 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 22:28:13,784 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-11-23 22:28:13,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:13,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:28:13,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-11-23 22:28:13,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:13,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 11 [2019-11-23 22:28:13,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995576582] [2019-11-23 22:28:13,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:28:13,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:28:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:28:13,835 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 11 states. [2019-11-23 22:28:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:13,895 INFO L93 Difference]: Finished difference Result 127 states and 160 transitions. [2019-11-23 22:28:13,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:28:13,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2019-11-23 22:28:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:13,900 INFO L225 Difference]: With dead ends: 127 [2019-11-23 22:28:13,900 INFO L226 Difference]: Without dead ends: 74 [2019-11-23 22:28:13,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 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 22:28:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-23 22:28:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2019-11-23 22:28:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-23 22:28:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2019-11-23 22:28:13,913 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 67 [2019-11-23 22:28:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:13,913 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2019-11-23 22:28:13,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:28:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2019-11-23 22:28:13,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-23 22:28:13,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:13,917 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 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 22:28:14,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:14,120 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:14,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2069670231, now seen corresponding path program 7 times [2019-11-23 22:28:14,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:14,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355774601] [2019-11-23 22:28:14,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 22:28:14,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355774601] [2019-11-23 22:28:14,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229603971] [2019-11-23 22:28:14,278 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 22:28:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:14,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:28:14,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 22:28:14,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:14,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-23 22:28:14,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644096302] [2019-11-23 22:28:14,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:28:14,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:14,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:28:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:28:14,401 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 11 states. [2019-11-23 22:28:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:14,446 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2019-11-23 22:28:14,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:28:14,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2019-11-23 22:28:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:14,449 INFO L225 Difference]: With dead ends: 130 [2019-11-23 22:28:14,449 INFO L226 Difference]: Without dead ends: 75 [2019-11-23 22:28:14,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 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 22:28:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-23 22:28:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2019-11-23 22:28:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-23 22:28:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2019-11-23 22:28:14,462 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 71 [2019-11-23 22:28:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:14,462 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2019-11-23 22:28:14,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:28:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2019-11-23 22:28:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-23 22:28:14,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:14,477 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 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 22:28:14,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:14,695 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:14,695 INFO L82 PathProgramCache]: Analyzing trace with hash 814816789, now seen corresponding path program 8 times [2019-11-23 22:28:14,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:14,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529896841] [2019-11-23 22:28:14,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 22:28:14,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529896841] [2019-11-23 22:28:14,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126094403] [2019-11-23 22:28:14,833 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 22:28:14,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:28:14,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:14,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:28:14,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 22:28:14,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:14,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-23 22:28:14,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145815180] [2019-11-23 22:28:14,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:28:14,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:14,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:28:14,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:28:14,951 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 12 states. [2019-11-23 22:28:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:14,990 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2019-11-23 22:28:14,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:28:14,991 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2019-11-23 22:28:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:14,992 INFO L225 Difference]: With dead ends: 132 [2019-11-23 22:28:14,992 INFO L226 Difference]: Without dead ends: 77 [2019-11-23 22:28:14,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 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 22:28:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-23 22:28:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2019-11-23 22:28:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-23 22:28:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2019-11-23 22:28:15,005 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 73 [2019-11-23 22:28:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:15,007 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2019-11-23 22:28:15,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:28:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2019-11-23 22:28:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-23 22:28:15,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:15,008 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 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 22:28:15,214 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:15,214 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:15,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1786469203, now seen corresponding path program 9 times [2019-11-23 22:28:15,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:15,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441733680] [2019-11-23 22:28:15,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-23 22:28:15,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441733680] [2019-11-23 22:28:15,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335195715] [2019-11-23 22:28:15,336 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 22:28:15,400 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:28:15,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:15,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:28:15,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-23 22:28:15,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:15,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-11-23 22:28:15,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125329390] [2019-11-23 22:28:15,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-23 22:28:15,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:15,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-23 22:28:15,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2019-11-23 22:28:15,453 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 15 states. [2019-11-23 22:28:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:15,531 INFO L93 Difference]: Finished difference Result 136 states and 169 transitions. [2019-11-23 22:28:15,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-23 22:28:15,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2019-11-23 22:28:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:15,533 INFO L225 Difference]: With dead ends: 136 [2019-11-23 22:28:15,533 INFO L226 Difference]: Without dead ends: 81 [2019-11-23 22:28:15,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2019-11-23 22:28:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-23 22:28:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-23 22:28:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-23 22:28:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2019-11-23 22:28:15,547 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 75 [2019-11-23 22:28:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:15,547 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2019-11-23 22:28:15,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-23 22:28:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2019-11-23 22:28:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-23 22:28:15,551 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:15,551 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 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 22:28:15,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:15,752 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1423401871, now seen corresponding path program 10 times [2019-11-23 22:28:15,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:15,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218456735] [2019-11-23 22:28:15,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-11-23 22:28:15,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218456735] [2019-11-23 22:28:15,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722807720] [2019-11-23 22:28:15,859 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 22:28:15,931 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:28:15,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:15,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:28:15,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-11-23 22:28:15,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:15,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-23 22:28:15,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892095576] [2019-11-23 22:28:15,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:28:15,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:28:15,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:28:15,957 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand 8 states. [2019-11-23 22:28:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:16,018 INFO L93 Difference]: Finished difference Result 138 states and 173 transitions. [2019-11-23 22:28:16,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:28:16,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2019-11-23 22:28:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:16,019 INFO L225 Difference]: With dead ends: 138 [2019-11-23 22:28:16,019 INFO L226 Difference]: Without dead ends: 95 [2019-11-23 22:28:16,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 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 22:28:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-23 22:28:16,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2019-11-23 22:28:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-23 22:28:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2019-11-23 22:28:16,024 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 79 [2019-11-23 22:28:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:16,025 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2019-11-23 22:28:16,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:28:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2019-11-23 22:28:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-23 22:28:16,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:16,026 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 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 22:28:16,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:16,238 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:16,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1318482946, now seen corresponding path program 11 times [2019-11-23 22:28:16,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:16,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187348251] [2019-11-23 22:28:16,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2019-11-23 22:28:16,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187348251] [2019-11-23 22:28:16,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84714750] [2019-11-23 22:28:16,382 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 22:28:16,587 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-23 22:28:16,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:16,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:28:16,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2019-11-23 22:28:16,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:16,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-11-23 22:28:16,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435681167] [2019-11-23 22:28:16,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:28:16,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:16,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:28:16,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:28:16,641 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand 12 states. [2019-11-23 22:28:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:16,756 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2019-11-23 22:28:16,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 22:28:16,757 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-11-23 22:28:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:16,758 INFO L225 Difference]: With dead ends: 156 [2019-11-23 22:28:16,758 INFO L226 Difference]: Without dead ends: 107 [2019-11-23 22:28:16,759 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 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 22:28:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-23 22:28:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2019-11-23 22:28:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-23 22:28:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2019-11-23 22:28:16,771 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 88 [2019-11-23 22:28:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:16,772 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2019-11-23 22:28:16,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:28:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2019-11-23 22:28:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-23 22:28:16,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:16,775 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 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 22:28:16,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:16,980 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:16,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1908534675, now seen corresponding path program 12 times [2019-11-23 22:28:16,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:16,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885835859] [2019-11-23 22:28:16,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2019-11-23 22:28:17,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885835859] [2019-11-23 22:28:17,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824910916] [2019-11-23 22:28:17,115 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 22:28:17,396 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-11-23 22:28:17,397 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:17,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 22:28:17,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-11-23 22:28:17,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:17,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-11-23 22:28:17,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420245834] [2019-11-23 22:28:17,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-23 22:28:17,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-23 22:28:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-11-23 22:28:17,464 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand 14 states. [2019-11-23 22:28:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:17,577 INFO L93 Difference]: Finished difference Result 175 states and 221 transitions. [2019-11-23 22:28:17,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-23 22:28:17,577 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2019-11-23 22:28:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:17,578 INFO L225 Difference]: With dead ends: 175 [2019-11-23 22:28:17,579 INFO L226 Difference]: Without dead ends: 118 [2019-11-23 22:28:17,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-11-23 22:28:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-23 22:28:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 111. [2019-11-23 22:28:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-23 22:28:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2019-11-23 22:28:17,585 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 99 [2019-11-23 22:28:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:17,586 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2019-11-23 22:28:17,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-23 22:28:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2019-11-23 22:28:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-23 22:28:17,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:17,587 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:28:17,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:17,788 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:17,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1248251046, now seen corresponding path program 13 times [2019-11-23 22:28:17,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:17,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078632228] [2019-11-23 22:28:17,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-11-23 22:28:17,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078632228] [2019-11-23 22:28:17,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048578532] [2019-11-23 22:28:17,919 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 22:28:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:18,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:28:18,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-11-23 22:28:18,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:18,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-23 22:28:18,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572355254] [2019-11-23 22:28:18,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:28:18,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:18,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:28:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:28:18,028 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 11 states. [2019-11-23 22:28:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:18,117 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2019-11-23 22:28:18,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:28:18,117 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2019-11-23 22:28:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:18,118 INFO L225 Difference]: With dead ends: 191 [2019-11-23 22:28:18,118 INFO L226 Difference]: Without dead ends: 126 [2019-11-23 22:28:18,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 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 22:28:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-23 22:28:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2019-11-23 22:28:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-23 22:28:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2019-11-23 22:28:18,123 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 110 [2019-11-23 22:28:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:18,124 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2019-11-23 22:28:18,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:28:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2019-11-23 22:28:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-23 22:28:18,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:18,125 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:28:18,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:18,334 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash 166356171, now seen corresponding path program 14 times [2019-11-23 22:28:18,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:18,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276068160] [2019-11-23 22:28:18,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2019-11-23 22:28:18,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276068160] [2019-11-23 22:28:18,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480482672] [2019-11-23 22:28:18,506 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 22:28:18,609 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:28:18,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:18,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:28:18,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2019-11-23 22:28:18,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:18,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-23 22:28:18,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932444205] [2019-11-23 22:28:18,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:28:18,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:18,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:28:18,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:28:18,657 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand 12 states. [2019-11-23 22:28:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:18,786 INFO L93 Difference]: Finished difference Result 206 states and 261 transitions. [2019-11-23 22:28:18,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:28:18,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 119 [2019-11-23 22:28:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:18,789 INFO L225 Difference]: With dead ends: 206 [2019-11-23 22:28:18,789 INFO L226 Difference]: Without dead ends: 135 [2019-11-23 22:28:18,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 119 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 22:28:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-23 22:28:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2019-11-23 22:28:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-23 22:28:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions. [2019-11-23 22:28:18,795 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 119 [2019-11-23 22:28:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:18,796 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions. [2019-11-23 22:28:18,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:28:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions. [2019-11-23 22:28:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-23 22:28:18,799 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:18,799 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 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 22:28:19,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:19,006 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1709607226, now seen corresponding path program 15 times [2019-11-23 22:28:19,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:19,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049227413] [2019-11-23 22:28:19,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2019-11-23 22:28:19,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049227413] [2019-11-23 22:28:19,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189861843] [2019-11-23 22:28:19,253 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 22:28:19,385 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-23 22:28:19,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:19,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 22:28:19,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2019-11-23 22:28:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:19,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2019-11-23 22:28:19,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267137855] [2019-11-23 22:28:19,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 22:28:19,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 22:28:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:28:19,498 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand 18 states. [2019-11-23 22:28:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:19,646 INFO L93 Difference]: Finished difference Result 218 states and 276 transitions. [2019-11-23 22:28:19,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-23 22:28:19,647 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 128 [2019-11-23 22:28:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:19,648 INFO L225 Difference]: With dead ends: 218 [2019-11-23 22:28:19,648 INFO L226 Difference]: Without dead ends: 141 [2019-11-23 22:28:19,649 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:28:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-23 22:28:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2019-11-23 22:28:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-23 22:28:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2019-11-23 22:28:19,654 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 128 [2019-11-23 22:28:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:19,654 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2019-11-23 22:28:19,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 22:28:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2019-11-23 22:28:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-23 22:28:19,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:19,656 INFO L410 BasicCegarLoop]: trace histogram [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 22:28:19,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:19,856 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1504295593, now seen corresponding path program 16 times [2019-11-23 22:28:19,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:19,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016388754] [2019-11-23 22:28:19,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-11-23 22:28:20,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016388754] [2019-11-23 22:28:20,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803240318] [2019-11-23 22:28:20,065 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 22:28:20,173 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:28:20,173 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:20,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 22:28:20,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-11-23 22:28:20,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:20,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-23 22:28:20,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701115602] [2019-11-23 22:28:20,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-23 22:28:20,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-23 22:28:20,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:28:20,200 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand 10 states. [2019-11-23 22:28:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:20,231 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2019-11-23 22:28:20,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:28:20,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2019-11-23 22:28:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:20,232 INFO L225 Difference]: With dead ends: 180 [2019-11-23 22:28:20,233 INFO L226 Difference]: Without dead ends: 143 [2019-11-23 22:28:20,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 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 22:28:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-11-23 22:28:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2019-11-23 22:28:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-23 22:28:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 176 transitions. [2019-11-23 22:28:20,237 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 176 transitions. Word has length 139 [2019-11-23 22:28:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:20,238 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 176 transitions. [2019-11-23 22:28:20,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-23 22:28:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 176 transitions. [2019-11-23 22:28:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-23 22:28:20,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:20,240 INFO L410 BasicCegarLoop]: trace histogram [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 22:28:20,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:20,444 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1789996121, now seen corresponding path program 17 times [2019-11-23 22:28:20,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:20,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066093392] [2019-11-23 22:28:20,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-11-23 22:28:20,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066093392] [2019-11-23 22:28:20,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905507117] [2019-11-23 22:28:20,666 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 22:28:21,380 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-23 22:28:21,380 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:21,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:28:21,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-11-23 22:28:21,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:21,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-23 22:28:21,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699162048] [2019-11-23 22:28:21,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:28:21,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:28:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:28:21,418 INFO L87 Difference]: Start difference. First operand 142 states and 176 transitions. Second operand 11 states. [2019-11-23 22:28:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:21,479 INFO L93 Difference]: Finished difference Result 182 states and 227 transitions. [2019-11-23 22:28:21,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 22:28:21,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2019-11-23 22:28:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:21,481 INFO L225 Difference]: With dead ends: 182 [2019-11-23 22:28:21,481 INFO L226 Difference]: Without dead ends: 145 [2019-11-23 22:28:21,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 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 22:28:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-23 22:28:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2019-11-23 22:28:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-23 22:28:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 178 transitions. [2019-11-23 22:28:21,487 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 178 transitions. Word has length 141 [2019-11-23 22:28:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:21,488 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 178 transitions. [2019-11-23 22:28:21,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:28:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 178 transitions. [2019-11-23 22:28:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-23 22:28:21,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:21,490 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:28:21,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:21,690 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:21,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:21,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2081531173, now seen corresponding path program 18 times [2019-11-23 22:28:21,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:21,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881849839] [2019-11-23 22:28:21,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-11-23 22:28:21,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881849839] [2019-11-23 22:28:21,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083016263] [2019-11-23 22:28:21,898 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 22:28:23,510 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-23 22:28:23,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:23,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-23 22:28:23,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-11-23 22:28:23,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:23,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-23 22:28:23,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357335445] [2019-11-23 22:28:23,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 22:28:23,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 22:28:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:28:23,548 INFO L87 Difference]: Start difference. First operand 144 states and 178 transitions. Second operand 12 states. [2019-11-23 22:28:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:23,586 INFO L93 Difference]: Finished difference Result 183 states and 228 transitions. [2019-11-23 22:28:23,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:28:23,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2019-11-23 22:28:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:23,588 INFO L225 Difference]: With dead ends: 183 [2019-11-23 22:28:23,588 INFO L226 Difference]: Without dead ends: 146 [2019-11-23 22:28:23,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 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 22:28:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-23 22:28:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2019-11-23 22:28:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-23 22:28:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2019-11-23 22:28:23,594 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 143 [2019-11-23 22:28:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:23,594 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2019-11-23 22:28:23,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 22:28:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2019-11-23 22:28:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-23 22:28:23,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:23,596 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:28:23,806 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:23,806 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1117384925, now seen corresponding path program 19 times [2019-11-23 22:28:23,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:23,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416296673] [2019-11-23 22:28:23,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-11-23 22:28:25,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416296673] [2019-11-23 22:28:25,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574775552] [2019-11-23 22:28:25,898 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:26,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 101 conjunts are in the unsatisfiable core [2019-11-23 22:28:26,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:26,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:28:26,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:28:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 535 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-11-23 22:28:27,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:27,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 50] total 53 [2019-11-23 22:28:27,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206755247] [2019-11-23 22:28:27,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-11-23 22:28:27,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:27,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-11-23 22:28:27,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2601, Unknown=0, NotChecked=0, Total=2756 [2019-11-23 22:28:27,224 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand 53 states. [2019-11-23 22:28:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:31,306 INFO L93 Difference]: Finished difference Result 1548 states and 1859 transitions. [2019-11-23 22:28:31,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-23 22:28:31,306 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 145 [2019-11-23 22:28:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:31,315 INFO L225 Difference]: With dead ends: 1548 [2019-11-23 22:28:31,315 INFO L226 Difference]: Without dead ends: 1543 [2019-11-23 22:28:31,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 118 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=195, Invalid=2997, Unknown=0, NotChecked=0, Total=3192 [2019-11-23 22:28:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2019-11-23 22:28:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 519. [2019-11-23 22:28:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-23 22:28:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 693 transitions. [2019-11-23 22:28:31,357 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 693 transitions. Word has length 145 [2019-11-23 22:28:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:31,357 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 693 transitions. [2019-11-23 22:28:31,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 53 states. [2019-11-23 22:28:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 693 transitions. [2019-11-23 22:28:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-23 22:28:31,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:31,359 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:28:31,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:31,565 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash 657622437, now seen corresponding path program 1 times [2019-11-23 22:28:31,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:31,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326499447] [2019-11-23 22:28:31,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 19 proven. 446 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-11-23 22:28:34,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326499447] [2019-11-23 22:28:34,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060156525] [2019-11-23 22:28:34,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:34,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-23 22:28:34,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:34,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:34,506 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 22 treesize of output 17 [2019-11-23 22:28:34,507 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:34,515 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:34,516 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:34,516 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:13 [2019-11-23 22:28:34,649 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-23 22:28:34,650 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:34,656 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:34,656 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:34,657 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:11 [2019-11-23 22:28:34,669 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-23 22:28:34,669 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:34,676 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:34,677 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:34,677 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:22 [2019-11-23 22:28:35,131 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-23 22:28:35,131 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:35,133 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:35,133 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:35,133 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:7 [2019-11-23 22:28:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 19 proven. 145 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2019-11-23 22:28:35,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:35,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 18] total 52 [2019-11-23 22:28:35,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494818229] [2019-11-23 22:28:35,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-23 22:28:35,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-23 22:28:35,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2019-11-23 22:28:35,200 INFO L87 Difference]: Start difference. First operand 519 states and 693 transitions. Second operand 52 states. [2019-11-23 22:28:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:28:44,642 INFO L93 Difference]: Finished difference Result 1558 states and 2080 transitions. [2019-11-23 22:28:44,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-11-23 22:28:44,642 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 145 [2019-11-23 22:28:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:28:44,659 INFO L225 Difference]: With dead ends: 1558 [2019-11-23 22:28:44,659 INFO L226 Difference]: Without dead ends: 1243 [2019-11-23 22:28:44,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4355 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1060, Invalid=16232, Unknown=0, NotChecked=0, Total=17292 [2019-11-23 22:28:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2019-11-23 22:28:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 775. [2019-11-23 22:28:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2019-11-23 22:28:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1028 transitions. [2019-11-23 22:28:44,716 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1028 transitions. Word has length 145 [2019-11-23 22:28:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:28:44,716 INFO L462 AbstractCegarLoop]: Abstraction has 775 states and 1028 transitions. [2019-11-23 22:28:44,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-23 22:28:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1028 transitions. [2019-11-23 22:28:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-23 22:28:44,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:28:44,719 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:28:44,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:44,923 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:28:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:28:44,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1510411935, now seen corresponding path program 2 times [2019-11-23 22:28:44,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:28:44,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996253562] [2019-11-23 22:28:44,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:28:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:28:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 43 proven. 426 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-23 22:28:48,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996253562] [2019-11-23 22:28:48,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043274701] [2019-11-23 22:28:48,893 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:28:49,001 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:28:49,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:28:49,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 143 conjunts are in the unsatisfiable core [2019-11-23 22:28:49,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:28:49,043 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-23 22:28:49,043 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,047 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:49,048 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,048 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2019-11-23 22:28:49,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,715 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 22 treesize of output 17 [2019-11-23 22:28:49,715 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,723 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:49,723 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,723 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:13 [2019-11-23 22:28:49,888 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2019-11-23 22:28:49,890 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,891 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,891 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,893 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,904 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,905 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:49,912 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2019-11-23 22:28:49,912 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,917 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:49,918 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,928 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:49,928 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:49,928 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:82, output treesize:46 [2019-11-23 22:28:50,140 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 22:28:50,141 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,143 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,145 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,147 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,148 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:50,149 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 59 [2019-11-23 22:28:50,150 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,167 INFO L567 ElimStorePlain]: treesize reduction 17, result has 72.1 percent of original size [2019-11-23 22:28:50,168 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,168 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:44 [2019-11-23 22:28:50,361 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,362 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 22:28:50,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,363 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,365 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,366 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,367 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,369 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:50,369 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 61 [2019-11-23 22:28:50,370 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,388 INFO L567 ElimStorePlain]: treesize reduction 20, result has 68.8 percent of original size [2019-11-23 22:28:50,389 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,389 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:44 [2019-11-23 22:28:50,631 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,632 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 22:28:50,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,634 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,636 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,638 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,640 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,641 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:50,641 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 61 [2019-11-23 22:28:50,642 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,661 INFO L567 ElimStorePlain]: treesize reduction 17, result has 73.0 percent of original size [2019-11-23 22:28:50,662 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,662 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:46 [2019-11-23 22:28:50,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,880 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 22:28:50,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:50,884 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:50,884 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 61 [2019-11-23 22:28:50,885 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,907 INFO L567 ElimStorePlain]: treesize reduction 17, result has 73.0 percent of original size [2019-11-23 22:28:50,908 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:50,908 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:46 [2019-11-23 22:28:51,113 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,114 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,115 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,117 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,118 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,119 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,120 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,121 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 55 [2019-11-23 22:28:51,122 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,150 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,150 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,151 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:46 [2019-11-23 22:28:51,369 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,371 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,373 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,375 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,376 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,376 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 55 [2019-11-23 22:28:51,377 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,385 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,385 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,386 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:46 [2019-11-23 22:28:51,594 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 22:28:51,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,596 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,607 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,618 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,618 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 61 [2019-11-23 22:28:51,619 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,636 INFO L567 ElimStorePlain]: treesize reduction 20, result has 68.8 percent of original size [2019-11-23 22:28:51,637 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,637 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:44 [2019-11-23 22:28:51,840 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,841 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,843 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:28:51,844 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,845 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 38 [2019-11-23 22:28:51,845 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,856 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,856 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,856 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:38 [2019-11-23 22:28:51,965 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,965 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2019-11-23 22:28:51,966 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,974 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:51,975 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:51,975 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:22 [2019-11-23 22:28:52,759 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-23 22:28:52,760 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:28:52,762 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:28:52,762 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:28:52,763 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:7 [2019-11-23 22:28:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 43 proven. 571 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:28:52,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:28:52,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 90 [2019-11-23 22:28:52,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435187174] [2019-11-23 22:28:52,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2019-11-23 22:28:52,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:28:52,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2019-11-23 22:28:52,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=7656, Unknown=0, NotChecked=0, Total=8010 [2019-11-23 22:28:52,908 INFO L87 Difference]: Start difference. First operand 775 states and 1028 transitions. Second operand 90 states. [2019-11-23 22:29:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:29:04,426 INFO L93 Difference]: Finished difference Result 1697 states and 2262 transitions. [2019-11-23 22:29:04,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-11-23 22:29:04,426 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 145 [2019-11-23 22:29:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:29:04,432 INFO L225 Difference]: With dead ends: 1697 [2019-11-23 22:29:04,432 INFO L226 Difference]: Without dead ends: 1405 [2019-11-23 22:29:04,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 104 SyntacticMatches, 9 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5589 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1054, Invalid=20702, Unknown=0, NotChecked=0, Total=21756 [2019-11-23 22:29:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2019-11-23 22:29:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1272. [2019-11-23 22:29:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2019-11-23 22:29:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1700 transitions. [2019-11-23 22:29:04,518 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1700 transitions. Word has length 145 [2019-11-23 22:29:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:29:04,519 INFO L462 AbstractCegarLoop]: Abstraction has 1272 states and 1700 transitions. [2019-11-23 22:29:04,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 90 states. [2019-11-23 22:29:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1700 transitions. [2019-11-23 22:29:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-23 22:29:04,522 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:29:04,522 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:29:04,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:29:04,726 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:29:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:29:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1704190939, now seen corresponding path program 3 times [2019-11-23 22:29:04,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:29:04,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249377526] [2019-11-23 22:29:04,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:29:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:29:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 61 proven. 403 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2019-11-23 22:29:08,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249377526] [2019-11-23 22:29:08,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099223851] [2019-11-23 22:29:08,765 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:29:09,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-23 22:29:09,067 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:29:09,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 93 conjunts are in the unsatisfiable core [2019-11-23 22:29:09,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:29:09,097 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-23 22:29:09,097 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:09,102 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:09,103 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:09,103 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-11-23 22:29:09,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:09,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:09,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:09,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:09,853 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:09,855 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:09,868 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2019-11-23 22:29:09,868 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:09,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:09,880 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:09,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:09,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2019-11-23 22:29:09,886 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:09,924 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:09,925 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-23 22:29:09,926 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:103, output treesize:59 [2019-11-23 22:29:10,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:10,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:10,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:11,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:11,148 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2019-11-23 22:29:11,155 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,156 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,157 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,159 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,161 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,162 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,163 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,164 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2019-11-23 22:29:11,164 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,171 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,171 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,178 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,179 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,179 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:82, output treesize:46 [2019-11-23 22:29:11,366 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 22:29:11,368 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,369 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,370 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,373 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,373 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,374 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,374 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 59 [2019-11-23 22:29:11,375 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,403 INFO L567 ElimStorePlain]: treesize reduction 17, result has 73.0 percent of original size [2019-11-23 22:29:11,403 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,403 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:46 [2019-11-23 22:29:11,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,591 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,597 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,597 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 55 [2019-11-23 22:29:11,598 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,606 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,607 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,607 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:46 [2019-11-23 22:29:11,802 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,804 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,806 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:11,807 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,808 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 55 [2019-11-23 22:29:11,808 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,817 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:11,817 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:11,818 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:46 [2019-11-23 22:29:12,048 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,050 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,051 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,053 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,080 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:12,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2019-11-23 22:29:12,081 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:12,088 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:12,088 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:12,088 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:38 [2019-11-23 22:29:12,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,208 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,209 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:12,313 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2019-11-23 22:29:12,314 INFO L343 Elim1Store]: treesize reduction 84, result has 60.7 percent of original size [2019-11-23 22:29:12,315 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 151 [2019-11-23 22:29:12,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:12,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:12,318 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:12,366 INFO L567 ElimStorePlain]: treesize reduction 96, result has 44.8 percent of original size [2019-11-23 22:29:12,367 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 22:29:12,367 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:78 [2019-11-23 22:29:12,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:12,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,672 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 50 [2019-11-23 22:29:18,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:18,684 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,685 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,700 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,703 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,721 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,723 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,897 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-11-23 22:29:18,898 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:18,899 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 87 treesize of output 356 [2019-11-23 22:29:18,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:18,911 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:18,922 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,926 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,937 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,939 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,941 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,946 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,950 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,987 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:18,988 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 102 [2019-11-23 22:29:18,989 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:18,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:18,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:19,000 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:19,002 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:19,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:19,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:19,043 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:19,044 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 142 [2019-11-23 22:29:19,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,047 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:19,695 WARN L192 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 82 [2019-11-23 22:29:19,696 INFO L567 ElimStorePlain]: treesize reduction 1082, result has 25.9 percent of original size [2019-11-23 22:29:19,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,705 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 3 xjuncts. [2019-11-23 22:29:19,706 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:214, output treesize:378 [2019-11-23 22:29:19,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:19,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:19,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:22,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:22,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 22:29:41,942 WARN L192 SmtUtils]: Spent 15.07 s on a formula simplification. DAG size of input: 154 DAG size of output: 70 [2019-11-23 22:29:41,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-23 22:29:41,964 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,966 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,969 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,971 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,974 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,980 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,981 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,985 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,991 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:41,993 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,044 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:42,044 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 102 [2019-11-23 22:29:42,046 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:42,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,073 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,086 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,087 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,142 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:42,143 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 142 [2019-11-23 22:29:42,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:42,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:29:42,153 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:42,162 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,165 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,167 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,170 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,178 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,180 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,182 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,187 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,190 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,191 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,193 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,249 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 22:29:42,250 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 102 [2019-11-23 22:29:42,251 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 22:29:42,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,283 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 22:29:42,288 INFO L189 IndexEqualityManager]: detected not equals via solver